Taxonomy: Classification of Organism – Old Year Questions

1. Biologists have so far known, found, and identified a large number of species in the plant and animal kingdom. In terms of numbers, the largest found and identified so far is from among the –

(a) Fungi
(b) Plants
(c) Insects
(d) Bacteria

[I.A.S. (Pre) 1996]


2. Bacteria can be seen by :

(a) Naked eye
(b) Compound microscope
(c) Hand lens
(d) Electron microscope

[U.P.P.C.S. (Pre) 1995]


3. Assertion (A): Some bacteria can synthesize their own
Reason (R): These bacteria have green matter called chloroplasts.

Code :
(a) Both (A) and (R) are true, and (R) is the correct
explanation of (A).
(b) Both (A) and (R) are true, but (R) is not the correct
explanation of (A).
(c) (A) is true, but (R) is false.
(d) (A) is false, but (R) is true.

[U.P.P.C.S. (Pre) 2000]


4. Which of the following statements about bacteria is correct :

(a) They are on the borderline of living and non-living
(b) They are on the borderline of plants and animals
(c) They are on the borderline of flowering and nonflowering plants
(d) None of the above

[U.P.P.C.S. (Pre) 1995]


5. The smallest organism, capable of autonomous growth and reproduction, is

(a) Virus
(b) Bacteria
(c) Mycoplasma
(d) Bacteriophage

[56th to 59th B.P.S.C. (Pre) 2015]


6. Assertion (A): Amoeba reproduces by fission.
Reason (R): All unicellular organisms reproduce by asexual methods.

(a) (A) and (R) both correct, and (R) is the correct explanation of (A).
(b) (A) and (R) both correct, but (R) is not the correct explanation of (A).
(c) (A) is correct, (R) is wrong.
(d) (A) is wrong, (R) is correct.

[I.A.S. (Pre) 2005]


7. Consider the following :
1. Bacteria
2. Fungi
3. Virus
Which of the above can be cultured in an artificial/ synthetic medium?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

[I.A.S. (Pre) 2021]


8. Warm-blooded animals are those that are able to keep their body temperature –

(a) Lower than environment
(b) Higher than the environment
(c) Constant temp. all time
(d) Equal to the atmospheric temp.

[R.A.S./R.T.S. (Pre) 1996]


9. Which one of the following statements is not correct?

(a) All echinoderms are viviparous.
(b) Roundworm has no circulatory system.
(c) In bony fishes, swim bladder is usually present.
(d) In cartilaginous fishes, fertilization is internal.

[I.A.S. (Pre) 2002]


10. Which one of the following creatures have no blood but respires ?

(a) Hydra
(b) Cockroach
(c) Earthworm
(d) Fish

[Uttarakhand Lower Sub. (Pre) 2010]


11. Of the following which one is not a fish?

(a) Starfish
(b) Sawfish
(c) Pipefish
(d) Guitarfish

[Chhattisgarh P.C.S. (Pre) 2011]


12. Of the following, which one is a true fish ?

(a) Silverfish
(b) Crayfish
(c) Jellyfish
(d) Catfish

[Uttarakhand P.C.S. (Mains) 2002]


13. Which one of the following is a true fish?

(a) Starfish
(b) Jellyfish
(c) Hagfish
(d) Seahorse

[R.A.S./R.T.S. (Pre) 1997]


14. Which of the following is fish ?

(a) Sea cucumber
(b) Sea cow
(c) Seahorse
(d) Sea lion

[U.P. Lower Sub. (Pre) 2008]


15. How many bones are in Shark Fish?

(a) 100
(b) 0
(c) 200
(d) 300

[Chhattisgarh P.C.S. (Pre) 2011]


16. Which is the largest mammal?

(a) Whale
(b) African Elephant
(c) Hippopotamus
(d) Polar bear

[M.P.P.C.S. (Pre) 2010]


17. From which of following groups does the whale belongs–

(a) Fishes
(b) Mammals
(c) Reptiles
(d) Amphibians

[R.A.S./R.T.S. (Pre) 1993]


18. Which one is a mammal?

(a) Shark
(b) Squid
(c) Octopus
(d) Whale

[R.A.S./R.T.S.(Pre) 2010]


19. Which of the following species is the largest of the ‘toothed-whales’?

(a) Finback whale
(b) Blue whale
(c) Sperm whale
(d) Humpback whale

[U.P.P.C.S. (Pre) (Re. Exam) 2015]


20. Which among the following one lays eggs and does not produce young ones directly?

(a) Echidna
(b) Kangaroo
(c) Porcupine
(d) Whale

[I.A.S. (Pre) 2008]


21. Mammal capable in flying is –

(a) Jaguar
(b) Ostrich
(c) Pellican
(d) Bat

[M.P.P.C.S. (Pre) 2010]


22. Amongst the following flying organisms, which one
does not belong to the group, Aves?

(a) Bat
(b) Crow
(c) Eagle
(d) Parrot

[U.P.P.C.S. (Mains) 2011]


23. Consider the following animals –

1. Sea cow
2. Seahorse
3. Sea lion

Which of the above is/are mammal/mammals?

(a) Only 1
(b) 1 and 3
(c) 2 and 3
(d) All of these

[I.A.S. (Pre) 2013]


24. Dolphins are classified in –

(a) Fish
(b) Amphibians
(c) Reptile
(d) Mammals

[40th B.P.S.C. (Pre) 1995]


25. From the following option, seal is the species of–

(a) fish
(b) bird
(c) reptiles
(d) mammal

[Uttarakhand U.D.A./L.D.A. (Pre) 2003]


26. Amphibia are –

(a) Very fastly moving boats
(b) Animals living in water only
(c) Animals living on land only
(d) Animals living equally in water and on land both

[38th B.P.S.C. (Pre) 1992]


27. Which organism among these breaths from skin ?

(a) Fish
(b) Pigeon
(c) Frog
(d) Cockroach

[Jharkhand P.C.S. (Pre) 2010]


28. Frogs are cold-blooded animals –

(a) True
(b) False
(c) None of the above
(d) All of the above

[Chhattisgarh P.C.S. (Pre) 2011]


29. During the metamorphosis of frog –

(a) Hind legs disappear
(b) Ingestion of food is slowed down
(c) Skin becomes rough
(d) Intestine is shortened

[U.P.P.S.C. (GIC) 2010]


30. Gavialis crocodiles are mostly found in?

(a) Ganga
(b) Godavari
(c) Krishna
(d) Kaveri

[R.A.S./R.T.S. (Pre) 1993]


31. Which is an atrocious animal?

(a) Penguin
(b) Whale
(c) Otter
(d) Tortoise

[39th B.P.S.C. (Pre) 1994]


32. Consider the following animals :
1. Hedgehog
2. Marmot
3. Pangolin
To reduce the chance of being captured by predators, which of the above organisms rolls up/roll up and protects/protect its/their vulnerable parts?

(a) 1 and 2
(b) 2 only
(c) 3 only
(d) 1 and 3

[I.A.S. (Pre) 2021]


33. Which one of the following varieties of dogs is unable to bark ?

(a) Dingo
(b) Alsatian
(c) Dalmatian
(d) Labrador

[U.P.P.C.S. (Mains) 2010]


34. The bear commonly performing on streets is –

(a) Sloth bear
(b) Sun bear
(c) Brown bear
(d) Cat bear

[U.P.P.C.S. (Mains) 2008]


35. Which of the following is not one of the animals that has been taught to use language with some success?

(a) Chimpanzee
(b) Parrot
(c) Dog
(d) Dolphin

[U.P. P.C.S. (Mains) 2017]


36. Which of the following property separate a man/human from apes ?

(a) Evince a desire to learn
(b) By a rudimentary sense of smell
(c) Contrary thumb
(d) Broader chin

[R.A.S./R.T.S. (Pre) 1994]


37. Among the following, which one is not an ape?

(a) Gibbon
(b) Gorilla
(c) Langur
(d) Orangutan

[I.A.S. (Pre) 2008]


38. Smallest man-like ape is :

(a) Gibbon
(b) Chimpanzee
(c) Gorilla
(d) Orangutan

[U.P. P.C.S. (Pre) 2016]


39. The Panda belongs to the same family as that of :

(a) Bear
(b) Cat
(c) Dog
(d) Rabbit

[I.A.S. (Pre) 2009]


40. Which one of the following animals have three chambered heart?

(a) Monkey
(b) Crocodile
(c) Fish
(d) Frog

[U.P. Lower Sub. (Pre) 2013]


41. Three chambered heart is found in :

(a) Mammals
(b) Birds
(c) Amphibians
(d) Pisces

[U.P. R.O./A.R.O. (Pre) (Re. Exam) 2016]


42. Which of the following does not have a gallbladder?

(a) Camel
(b) Giraffe
(c) Rat
(d) Fish

[U.P.P.C.S. (Spl.) (Mains) 2004]


43. In which of the following animals hooves are not found?

(a) Deer
(b) Jackal
(c) Zebra
(d) Horse

[U.P.P.C.S. (Pre) 2017]


44. Nilgai belongs to the following family :

(a) Cow
(b) Goat
(c) Sheep
(d) Deer

[U.P.P.C.S. (Mains) 2006]

45. Match List-I (Indian wild life species) with List-II (Scientific names) and select the correct answer using the codes given below :

List-I List-II
(Indian Wildlife Species) (Scientific Names)
A. Asiatic wild ass 1. Boselaphus tragocamelus
B. Barasingha 2. Cervus duvauceli
C. Chinkara 3. Equus hemionus
D. Nilga 4. Gazella bennetti

Code :
(a) 2 3 1 4
(b) 3 2 4 1
(c) 2 3 4 1
(d) 3 2 1 4

[I.A.S. (Pre) 2002]


46. Match List-I with List-II and choose the right answer from the given code –

List-I List-II
(Symptoms) (Creature)
A. Wingless insect 1. Kiwi
B. Flightless birds 2. Silverfish
C. Limbless Reptiles 3. Kurma
D. Lungless creature 4. Snakes
5. Fish

List-I List-II
(Symptoms) (Creature)
A. Wingless insect 1. Kiwi
B. Flight less birds 2. Silverfi sh
C. Limbless Reptiles 3. Kurma
D. Lungless creature 4. Snakes
5. Fish

Code :
(a) 1 3 2 5
(b) 2 1 4 5
(c) 2 1 3 4
(d) 3 1 4 2

[I.A.S. (Pre) 1993]


47. Kiwi is –

(a) A species of vulture found in Amazon forest only
(b) Flightless bird found only in New Zealand
(c) A desert snake
(d) Fastest flying Chiropteran mammal of Australia

[R.A.S./R.T.S. (Pre) (Re. Exam) 2013]


48. Which of the following is of organic origin ?

(a) Coral
(b) Emerald
(c) Ruby
(d) Topaz

[Uttarakhand P.C.S. (Pre) 2010]


49. Octopus is :

(a) An arthropod
(b) An echinoderm
(c) A hemichordate
(d) A mollusc

[I.A.S. (Pre) 2003]

[U.P.P.C.S. (Spl.) (Mains) 2004]


50. The largest invertebrate is –

(a) Octopus
(b) Squid
(c) Coral
(d) Jellyfish

[U.P.P.C.S. (Mains) 2004]


51. Among the following organisms, which one does not belong to the class of other three?

(a) Crab
(b) Mite
(c) Scorpion
(d) Spider

[I.A.S. (Pre) 2014]


52. White leg-horn is a variety of :

(a) Parrot
(b) Peacock
(c) Fowl
(d) Owl

[Uttarakhand P.C.S. (Mains) 2002]


53. Ticks and mites are actually :

(a) Arachnids
(b) Crustaceans
(c) Insects
(d) Myriapods

[I.A.S. (Pre) 2002]


54. Termites are also known as :
(a) Ants
(b) Red ants
(c) White ants
(d) Black ants

[Uttarakhand P.C.S. (Mains) 2002]


55. Glow-worm is :
(a) A mollusca
(b) An insect
(c) A worm
(d) A nematode

[Uttarakhand P.C.S. (Mains) 2002]


56. The presence of parasites within parasites is a phenomenon known as :

(a) Commensalism
(b) Hyperparasitism
(c) Endoparasitism
(d) Ectoparasitism

[Uttarakhand P.C.S. (Mains) 2002]


57. Which one of the following is not an insect ?

(a) Bed bug
(b) Spider
(c) House fly
(d) Mosquito

[U.P.P.C.S. (Spl.) (Pre) 2008 U.P. U.D.A./L.D.A. (Mains) 2010 Jharkhand P.C.S. (Pre) 2021]


58. Spiders are different from insects because they have-

(a) Six legs
(b) Eight legs
(c) Ten legs
(d) Twelve legs

[R.A.S./R.T.S. (Pre) 1996]


59. Which is not insect amongst following?

(a) Butterfly
(b) Cockroach
(c) Mosquito
(d) Spider

[Chhattisgarh P.C.S. (Pre) 2011]


60. The silk produced by spiders is called :

(a) Tussar silk
(b) Gossamer silk
(c) Munga silk
(d) Ahimsa silk

[U.P. R.O./A.R.O. (Pre) 2021]


61. At which stage in its life cycle, does the silkworm yield the fi bre of commerce?

(a) Egg
(b) Larva
(c) Pupa
(d) Imago

[I.A.S. (Pre) 2000 Chhattisgarh P.C.S (Pre) 2005]


62. Silkworm grows on –

(a) Reetha leaves
(b) Ficus leaves
(c) Peach leaves
(d) Mulberry leaves

[Uttarakhand Lower Sub. (Pre) 2010]


63. Which one of the following is a secretion from the body of an insect ?

(a) Pearl
(b) Coral
(c) Lac
(d) Gum

[U.P.P.C.S. (Pre) 1996]


64. Which of the following organisms has white blood?

(a) Lizard
(b) Cockroach
(c) House bug
(d) Mosquito

[U.P.P.C.S. (Pre) 2019]


65. How do most insects respire ?

(a) Through skin
(b) Through gills
(c) By lungs
(d) By tracheal system

[I.A.S. (Pre) 2007]


66. Consider the following statements :

1. Tapeworm is a hermaphrodite.
2. Roundworm has separate sexes.
3. Filaria is caused by a nematode.
4. Guinea worm is an annelid.
Which of these are correct?

(a) 1 and 2
(b) 1, 2 and 3
(c) 3 and 4
(d) 2, 3 and 4

[I.A.S. (Pre) 2001]


67. Which of the following are detritivores?

1. Earthworms
2. Jellyfish

3. Millipedes
4. Seahorses

5. Woodlice

Select the correct answer using the code given below.

(a) 1, 2 and 4 only
(b) 2, 3, 4 and 5 only
(c) 1, 3 and 5 only
(d) 1, 2, 3, 4 and 5

[I.A.S. (Pre) 2021]


68. Which one of the following is a filter feeder?

(a) Catfish
(b) Octopus
(c) Oyster
(d) Pelican

[I.A.S. (Pre) 2021]


69. Which of the following group of animals are nocturnal animals?

(a) Housefly, Bedbug, Parrot
(b) Mosquito, Bat, Owl
(c) Mosquito, Sparrow, Deer
(d) Owl, Bats, Dog

[Uttarakhand U.D.A./L.D.A. (Pre) 2005]


70. Which of the following has the largest brain in proportion to its body size?

(a) Ant
(b) Elephant
(c) Dolphin
(d) Human Being

[U.P.P.C.S. (Pre) 2017]


(a) Glacial acetic acid
(b) Methanol
(c) Formic acid
(d) Stearic acid

[I.A.S. (Pre) 1999]


72. Consider the following statements about mosquitoes :
1. Only males suck blood
2. Only females suck blood
3. Females suck plant juices
4. Males have bigger wings than females
5. Females have bigger wings than males
Of these :

(a) Only 2 and 4 are correct.
(b) Only 1 and 2 are correct.
(c) Only 3 and 5 are correct.
(d) Only 2 and 5 are correct.

[U.P. R.O./A.R.O. (Pre) 2016]


73. Which one of the following animals stores water in the intestine?

(a) Moloch
(b) Camel
(c) Zebra
(d) Uromastix

[I.A.S. (Pre) 1994]


74. In which one of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?

(a) Dragonfy
(b) Honeybee
(c) Spider
(d) Pit Viper

[I.A.S. (Pre) 2008]


75. King Cobra is the only snake that makes its own nest.
Why does it make its nest?

(a) It is a snake-eater and the nest helps attract other snakes
(b) It is a viviparous snake and needs a nest to give birth to its of spring
(c) It is an oviparous snake that lays its eggs in the nest and guards the nest until they are hatched
(d) It is a large, cold-blooded animal and needs a nest to hibernate in the cold season

[I.A.S. (Pre) 2010]


76. The only snake that builds a nest is :

(a) Chain Viper
(b) King Cobra
(c) Krait
(d) Saw-scaled viper

[I.A.S. (Pre) 1995]


77. The venom of cobra is–

(a) Neurotoxic
(b) Haemotoxic
(c) Both (a) & (b)
(d) None of the.above

[Uttarakhand P.C.S. (Pre) 2010]


78. For which one of the following snakes is the diet mainly composed of other snakes?

(a) Krait
(b) Russell’s viper
(c) Rattlesnake
(d) King Cobra

[I.A.S. (Pre) 2008]


79. Which snake of the following is nonpoisonous?

(a) Cobra
(b) Viper

(c) Coral-Snake
(d) Python

[M.P.P.C.S. (Pre) 2012]


80. Poison gland of snakes is homologous to –

(a) Electric organ of fishes
(b) Stings of rays
(c) Sebaceous glands of mammals
(d) Salivary gland of vertebrates

[I.A.S.(Pre) 1993]


82. Which among the following animals excretes solid urine?

(a) Kangaroo rat
(b) Giraffe
(c) Squirrel
(d) Crow

[U.P. P.C.S. (Mains) 2017]


83. Consider the following statements :
1. Some species of turtles are herbivores.
2. Some species of fi sh are herbivores.
3. Some species of marine mammals are herbivores.
4. Some species of snakes are viviparous.
Which of the statements given above are correct?

(a) 1 and 3 only
(b) 2, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4

[I.A.S. (Pre) 2019]


84. Dogs are herbivores –

(a) True
(b) False
(c) None of the above
(d) All of the above

[Chhattisgarh P.C.S. (Pre) 2011]


85. Plants growing on rocks are called :

(a) Epiphytes
(b) Halophytes
(c) Xerophytes
(d) Lithophytes

[R.A.S./R.T.S.(Pre) 2010]


86. Which one of the following is an insectivorous plant?

(a) Passion flower plant
(b) Pitcher plant
(c) Night queen
(d) Flame of the forest

[I.A.S. (Pre) 2008]


87. Which one of the following parts of the pitcher plants becomes modified into a pitcher?

(a) Stem
(b) Leaf
(c) Stipule
(d) Petiole

[I.A.S. (Pre) 2007]


88. Which one of the following is not correctly matched?

(a) Yeast – Fermentation
(b) Casein – Milk protein
(c) Aloe Vera – Angiosperm
(d) Nepenthes – Parasitic angiosperm

[U.P. R.O./A.R.O. (Pre) 2016]


89. Nependthes khasiana a rare and endangered plant is found in –

(a) Himachal Pradesh
(b) Madhya Pradesh
(c) Meghalaya
(d) Uttar Pradesh

[U.P.P.C.S. (Mains) 2011]


90. Turmeric is obtained from which part of the plant :

(a) Root
(b) Stem
(c) Fruit
(d) Flower bud

[U.P.P.C.S. (Pre) 2006 R.A.S./R.T.S.(Pre) 1999]


91. Which of the following is the eatable part of turmeric
plant ?

(a) Root
(b) Stem
(c) fruit
(d) Flower

[M.P.P.C.S. (Pre) 1993]


92. Which of the following underground produced vegetables is a modified root ?

(a) Potato
(b) Sweet Potato
(c) Bandda
(d) Jimikand

[U.P.P.C.S. (Mains) 2005]


93. The storage organ of which of the following plants is
not a stem ?

(a) Sugarcane
(b) Ginger
(c) Potato
(d) Sweet potato

[U.P. U.D.A./L.D.A. (Mains) 2010]


94. Which of the following is a stem?

(a) Turnip
(b) Ginger
(c) Carrot
(d) Sweet potato

[U.P.P.C.S. (Pre) (Re. Exam) 2015]


95. Ginger is a stem and not root because :

(a) it stores food material
(b) it has nodes and internodes
(c) it grows horizontally in the soil
(d) it lacks chlorophyll
(e) None of the above / More than one of the above

[66th B.P.S.C. (Pre) 2020]


96. Match the following
A. Rhizome 1. Garlic
B. Tuber 2. Jimikand-suran
C. Bulb 3. Ginger
D. Corm 4. Potato

Code :

(a) 1 2 3 4
(b) 3 4 2 1
(c) 3 4 1 2
(d) 3 1 2 4
(e) 3 2 1 4

[Chhattisgarh P.C.S (Pre) 2013]


97. Which one of the following is a modified stem ?

(a) Carrot
(b) Sweet potato
(c) Coconut
(d) Potato

[I.A.S. (Pre) 1996]


98. Potato is a :

(a) Root
(b) Fruit
(c) Tuber
(d) Bulb

[M.P. P.C.S. (Pre) 2016]


99. Pea plant is :

(a) Herb
(b) Flower
(c) Bush
(d) None of these

[39th B.P.S.C. (Pre) 1994]


100. Clove is a –

(a) Buds of stem
(b) Bales of root
(c) Closed buds
(d) Seed

[U.P. Lower Sub. (Spl.) (Pre) 2002]
[U.P. Lower Sub. (Spl.) (Pre) 2003]


101. A clove represents to which of the following?

(a) Terminal bud
(b) Accessory bud
(c) Flower bud
(d) Vegetative bud

[U.P. P.C.S. (Pre) 2021]


102. Which one of the following spices is a flower bud ?

(a) Cumin
(b) Clove
(c) Pepper
(d) Turmeric

[U.P.P.C.S. (Mains) 2011]


103. ‘Cloves’ are –

(a) Nodules of stem
(b) Nodules of roots
(c) Leaves
(d) Dried flowers

[U.P.P.C.S. (Pre) (Re. Exam) 2015]


104. Cloves are obtained from which of the following parts of the plant?

(a) Dried leaves
(b) Dried stems
(c) Dried seeds
(d) Dried flower buds

[56th to 59th B.P.S.C. (Pre) 2015]


105. Clove, a spice, is obtained from which part of the plant?

(a) Fruit
(b) Stem
(c) Root
(d) Flower bud
(e) None of the above / More than one of the above

[66th B.P.S.C. (Pre) 2020]


106. A plant bud is –

(a) An embryonic shoot
(b) An embryonic leaf
(c) An endosperm
(d) A seed

[56th to 59th B.P.S.C. (Pre) 2015]


107. Which of the following is not correctly matched–

(a) Ginger – Rhizome
(b) Saffron – Seed
(c) Opium – Opium capsule
(d) Jute – Stem

[U.P.U.D.A./L.D.A. (Pre) 2001]


108. Saffron is dried mixture of :

(a) Leaf and stem
(b) Petals and roots
(c) Seed forming parts of flower
(d) Seeds and buds

[U.P.P.C.S. (Pre) 2002]


109. In the following pairs of plants and their edible parts, which pair is not correctly matched ?

(a) Ginger – Rhizome
(b) Onion – Fleshy leaves
(c) Potato – Roots
(d) Coconut – Endosperm

[U.P.P.C.S. (Mains) 2011]


110. Which of the following parts of potato is edible?

(a) Stem
(b) Seed
(c) Root
(d) Fruit

[U.P.R.O./A.R.O. (Mains) 2013]


111. Which one of the following is a fruit –

(a) Potato
(b) Radish
(c) Ladies finger
(d) Sweet Potato

[R.A.S./R.T.S. (Pre) 1999]


112. Among the following, which is not a true fruit?

(a) Apple
(b) Grape
(c) Date
(d) Plum
(e) None of the above / More than one of the above

[66th B.P.S.C. (Pre) 2020]


113. The type of fruit in which lychee can be placed in –

(a) Drupe
(b) Hesperidium
(c) Nut
(d) One seeded berry

[U.P.P.C.S. (Mains) 2010]


114. The characteristic odour of garlic is due to –

(a) A chloro compound
(b) A sulphur compound
(c) A f uorine compound
(d) Acetic acid

[I.A.S. (Pre) 1997 Chhattisgarh P.C.S. (Pre) 2005 U.P.P.C.S. (Spl.) (Mains) 2008]


115. Peeling of onions causes tears as onions release –

(a) Sulphonic acid
(b) Sulfenic acid
(c) Amino acid
(d) Carbolic acid

[U.P.P.C.S. (Pre) 2015]


116. Pungency in chillies is due to the presence of :

(a) Lycopene
(b) Capsaicin
(c) Carotene
(d) Anthocyanin

[U.P. P.C.S. (Pre) 2016]


117. Red chillies are hot because these contain

(a) Ricin
(b) Capsaicin
(c) Arecoline
(d) Caffeol

[U.P.P.C.S. (Spl) (Mains) 2008]


118. The cause of sweet taste in fruits is :

(a) Maltose
(b) Ribose
(c) Lactose
(d) Fructose

[U.P.P.C.S. (Pre) 2017]


119. Which one of the following groups of organisms has
significance in diagnosing the death by drowning?

(a) Lichens
(b) Protozoa
(c) Cyanobacteria
(d) Diatoms

[R.A.S./R.T.S.(Pre) 2008]


120. The mulberry fruit is :
(a) Sorosis
(b) Syconus
(c) Samara
(d) Nut

[U.P.P.C.S. (Mains) 2006]


121. Which one of the following fibre is not a product of plant stem :

(a) Sunn
(b) Hemp
(c) Jute
(d) Cotton

[U.P.P.C.S. (Pre) 2002]


122. Which among the following is a man-made cereal?

(a) Secale cereal
(b) Pomato
(c) Triticale
(d) None of the Above

[U.P. P.C.S. (Mains) 2017]


123. Which one of the following is a man-made cereal, not found in nature?

(a) Dwarf wheat
(b) Hybrid maize
(c) Triticale
(d) Soybean

[I.A.S. (Pre) 1993]


124. In the nature, which of the following is/are most likely to be found surviving on a surface without soil?
1. Fern
2. Lichen

3. Moss
4. Mushroom

Select the correct answer using the code given below.

(a) 1 and 4 only
(b) 2 only
(c) 2 and 3
(d) 1, 3 and 4

[I.A.S. (Pre) 2021]


125. Read the given statements–
Assertion (A) : The root systems of desert plants are
Reason (R) : High temperature of soil encourages
the growth of roots.
Referencing above, which one is the right answer?

Code :

(a) Both (A) and (R) are true, and (R) is the correct
explanation of (A).
(b) Both (A) and (R) are true, but (R) is not the correct
explanation of (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.

[U.P. Lower Sub. (Pre) 1998]


126. Desert plants have longer root system because :

(a) High temperature of the soil stimulates the growth of roots
(b) Roots grow in search of water
(c) Soil does not contain water, hence becomes compact and presses the roots to grow longer
(d) Roots moves opposite to the solar heat

[U.P.P.C.S. (Pre) 1996]


127. Deserts have phreatophytes, i.e., plants that have

(a) Succulent stem (100-200 mm thick)
(b) Lipid accumulation (20-30 mg) in leaves
(c) Long (20-30 ft) tap roots
(d) Small (2-3 mm) or spine-like leaves

[R.A.S./R.T.S. (Re. Exam) (Pre) 2013]


128. Plants adapted to dry climate are known as –

(a) Epiphyte
(b) Xerophyte
(c) Hydrophytes
(d) Mean plants

[R.A.S./R.T.S. (Pre) 1993]


129. Desert plants are generally –

(a) Viviparous
(b) Succulent
(c) Herbaceous
(d) Heterophyllous

[U.P. Lower Sub. (Pre) 2013]


130. Epiphytes are plants which depend on other plants for :

(a) Food
(b) Mechanical support
(c) Shade
(d) water

[I.A.S. (Pre) 2001]


131. Plants which grow on saline soils are-

(a) Xerophytes
(b) Hydrophytes
(c) Halophytes
(d) Succulents

[53rd to 55th B.P.S.C. (Pre) 2011]


132. A hydrophyte is :

(a) A marine animal
(b) An aquatic plant
(c) A plant disease
(d) A rootless plant

[U.P.P.C.S. (Pre) 1994 R.A.S./R.T.S. (Pre) 1999]


133. Which one of the following pairs is not correctly

(a) Cuscuta – stem parasite
(b) Chandan – root parasite
(c) Orchids – epiphyte
(d) Nepenthes – hydrophyte

[U.P. R.O./A.R.O. (Pre) 2017]


134. Consider the following statements :
1. Weeping jelly is due to an excess of acid.
2. Biofertilizer most suited to sugarcane are rhizobium.
3. Plants grown in salt water are called thallophytes.
4. Dormancy breaking hormone is cytokinin.
Which of these statements are correct ?

(a) Only 1 and 2
(b) Only 2 and 3
(c) Only 3 and 4
(d) Only 4 and 1

[U.P. Lower Sub. (Pre) 2013]


135. Work as intermediaries between biotic and abiotic components :

(a) Parasite
(b) Decomposers
(c) Producers
(d) Consumers

[U.P. R.O./A.R.O. (Mains) 2017]


136. Which of the following is not correctly matched :

(a) Autotroph – Producer
(b) Heterotroph – Consumer
(c) Saprotroph – Decomposer
(d) Herbivore – Secondary consumer

[U.P.P.C.S. (Pre) 2000]


137. Trophic level I includes :

(a) Herbivorous animals
(b) Carnivorous animals
(c) Omnivorous animals
(d) Green plants

[M.P. P.C.S. (Pre) 2016]


138. Consider the following kinds of organisms :
1. Copepods
2. Cyanobacteria

3. Diatoms
4. Foraminifera

Which of the above are primary producers in the food
chains of oceans?

(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4

[I.A.S. (Pre) 2021]


139. Fishes survive under the frozen lake, because-

(a) Fishes have hot blood
(b) Fishes are in hibernation under it
(c) Water does not freeze near bottom
(d) Ice is the conductor of heat.

[U.P.P.S.C. (GIC) 2010]


140. After bringing out of the water fish die, because-

(a) They get excess quantity of oxygen
(b) Their body temperature increases
(c) They cannot breathe
(d) They can not move in water

[39th B.P.S.C. (Pre) 1994]


141. Fish generally breathe through –

(a) Skin
(b) Nose
(c) Gills
(d) Fins

[Uttarakhand P.C.S. (Mains) 2006]


142. Redness in apple is due to –

(a) Anthocyanin
(b) Lycopene
(c) Carotene
(d) Xanthophyll

[U.P.P.C.S. (Mains) 2002]


143. Which of the following accounts for the red colour of tomato?

(a) Capsaicin
(b) Carotene
(c) Anthocyanin
(d) Lycopene

[U.P. P.C.S. (Mains) 2016]


144. Which one of the following is responsible for the red
colour of tomato?

(a) β-Carotene
(b) Anthocyanin
(c) Lycopene
(d) None of the above

[Jharkhand P.C.S. (Pre) 2013]


145. Red color in tomato is due to :

(a) Capsaicin
(b) Lycopene
(c) Xanthophyll
(d) None of the above

[U.P.P.C.S. (Spl.) (Mains) 2008]


146. The yellow colour of papaya is due to –

(a) Papain
(b) Lycopene
(c) Caricaxanthin
(d) Carotene

[U.P. Lower Sub. (Pre) 2015]


147. Recently, our scientists have discovered a new and distinct species of banana plant which attains a height of about 11 meters and has orange-colored fruit pulp.
In which part of India has it been discovered?

(a) Andaman Islands
(b) Anaimalai Forests
(c) Maikala Hills
(d) Tropical rainforests of northeast

[I.A.S. (Pre) 2016]


148. Which of the following groups of living beings belong
to the same species?

(a) Chinese, American, Indians and Black Africans
(b) Tigers, Lions, and Cats
(c) Pigeons, Doves, and Partridges
(d) Lizards, Crocodiles, and Snakes

[R.A.S./R.T.S.(Pre) 2003]


149. Yeast is an example of –

(a) Bacteria
(b) Fungus
(c) Virus
(d) Algae

[U.P. Lower Sub. (Pre) 2013]


150. Yeast and mushrooms are –

(a) Algae
(b) Gymnosperm
(c) Fungi
(d) Tuberous Roots

[Uttarakhand P.C.S. (Pre) 2003]


151. What is a mushroom?

(a) Fungi
(b) Plant
(c) Animal
(d) Bacteria

[Chhattisgarh P.C.S. (Pre) 2011]


152. Mushroom used in for making juicy vegetable is a –

(a) Fungus
(b) Alga
(c) Green vegetable
(d) Flesh of animal

[U.P.P.C.S. (Mains) 2008]


153. Which of the following have species that can establish symbiotic relationships with other organisms?
1. Cnidarians
2. Fungi
3. Protozoa
Select the correct answer using the code given below.

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

[I.A.S. (Pre) 2021]


154. Which one of the following is a useful functional association between fungi and the roots of higher plants ?

(a) Biofertilizer
(b) Coralloid root
(c) Lichens
(d) Mycorrhiza

[I.A.S. (Pre) 1999]


155. ‘Mycorrhiza’ is a symbiotic association between :

(a) Algae and plants
(b) Algae and fungi
(c) Fungi and plants
(d) Blue-green algae and fungi

[U.P. B.E.O. (Pre) 2019]


156. Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of –

(a) Algae and bacteria
(b) Algae and fungi
(c) Bacteria and fungi
(d) Fungi and mosses

[I.A.S. (Pre) 2014]


157. Lichen are the complex creature, made from-

(a) Fungi and Bacteria
(b) Fungi and Algae
(c) Fungi and Bryophyta
(d) Algae and Bacteria

[R.A.S./R.T.S. (Pre) 1997]


158. The interaction between algae and fungi to form lichen is called :

(a) parasitism
(b) mutualism
(c) commensalism
(d) conversion
(e) None of the above/More than one of the above

[65th B.P.S.C. (Pre) 2019]


159. Nitrogen-fixing bacteria present in the nodules of the root of leguminous plant are–

(a) Saprophytic
(b) Parasitic
(c) Symbiotic
(d) Protolytic

[Uttarakhand P.C.S. (Pre) 2007]


160. Major component of cotton is-

(a) Protein
(b) Fatty acid
(c) Cellulose
(d) Glycerine

[U.P. Lower Sub. (Pre) 2009]


161. Noscapine is obtained from :

(a) Poppy
(b) Basii
(c) Eucalyptus
(d) Ephedra

[U.P.P.C.S. (Mains) 2012]


162. Heroin is obtained from :

(a) Indian hemp
(b) Opium poppy
(c) Tobacco
(d) Areca nut

[U.P.P.C.S. (Pre) 2005]


163. We get morphine from :

(a) Flower
(b) Leave
(c) Fruit
(d) Stem

[R.A.S./R.T.S. (Pre) 1994]


164. Opium is obtained from :

(a) Dried leaves
(b) Roots
(c) Latex from unripe fruit
(d) Latex from ripe fruit

[U.P.R.O./A.R.O. (Mains) 1994]


165. Opium is obtained from which part of the poppy plant ?

(a) Flower
(b) Leaves
(c) Unripe Fruits
(d) Roots

[U.P.P.C.S. (Mains) 2011]


166. The main constituent of opium is :

(a) Morphine
(b) Heroin
(c) Atropine
(d) Quinine

[U.P. P.C.S. (Mains) 2016 ]


167. What is the botanical name of opium?

(a) Emblica of cinalis
(b) Papaver Somniferum
(c) Rauwolf a Serpentina
(d) Cinchona Species

[M.P.P.C.S. (Pre) 2017]


168. Opium is of which category medicine?

(a) Depressant
(b) Stimulant
(c) Hallucinogenic
(d) None of the above

[M.P.P.C.S. (Pre) 2019]