Plants : Economic Importance – Old Year Questions

1. ‘Kanchan’ is an improved variety of :

(a) Grapes
(b) Indian gooseberry
(c) Guava
(d) Mango

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


2. The hybrid variety of mango developed from the cross of Neelum and Alphonso is :

(a) Amrapali
(b) Dasheri
(c) Ratna
(d) Badami

[M.P. P.C.S. (Pre) 2020]


3. Biologically, synthesized nano particles are used as a new eco-friendly technology, which has big possibility in cancer treatment. Extracts of a plant are used in this technique, this plant is :

(a) Calotropis gigantea
(b) Parthenium hysterophorus
(c) Rice
(d) Lemongrass

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


4. Litmus-the acid–base indicator is obtained from –

(a) Bacterium
(b) Lichen
(c) Virus
(d) None of the above

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


5. With reference to neem tree, consider the following statements :
1. Neem oil can be used as a pesticide to control the proliferation of some species of insects and mites.
2. Neem seeds are used in the manufacture of bio-fuels and hospital detergents.
3. Neem oil has applications in pharmaceutical industry.
Which of the statements given above is/are correct?

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

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


6. Which of the following is a medicinal crop?

(a) Sugarcane
(b) Aloe vera
(c) Cotton
(d) Mahua

[M.P. P.C.S. (Pre) 2018]


7. Tulsi plant has medicinal values due to the presence of the following

(a) Inorganic Acid
(b) Organic Acid
(c) Phenols and Flavonoids
(d) None of the above

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


8. Tulsi plant has medicinal values due to the presence of the following :

(a) Inorganic Acid
(b) Organic Acid
(c) Phenols and Flavonoids
(d) Lithium Bicarbonate

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


9. With reference to ‘palm oil’, consider the following statements :
1. The palm oil tree is native to Southeast Asia.
2. The palm oil is a raw material for some industries producing lipstick and perfumes.
3. The palm oil can be used to produce biodiesel.
Which of the statements given above are correct?

(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]


10. According to India’s National Policy on Biofuels, which of the following can be used as raw materials for the
production of biofuels?
1. Cassava
2. Damaged wheat grains
3. Groundnut seeds
4. Horse gram
5. Rotten potatoes
6. Sugar beetSelect the correct answer using the code given below:

(a) 1, 2, 5 and 6 only
(b) 1, 3, 4 and 6 only
(c) 2, 3, 4 and 5 only
(d) 1, 2, 3, 4, 5 and 6

[I.A.S. (Pre) 2020]


11. Canola refers to a special type of oilseed mustard varieties breed for human consumption. The main characteristic of these varieties is that the :

(a) Seeds have very high oil content
(b) Oil is rich in unsaturated fatty acids
(c) Oil has long shelf-life
(d) Oil has very low erucic acid content

[I.A.S. (Pre) 2000]


12. Consider the following statements :
1. Moringa (drumstick tree) is a leguminous evergreen tree.
2. Tamarind tree is endemic to South Asia.
3. In India, most of the tamarind is collected as minor forest produce.
4. India exports tamarind and seeds of moringa.
5. Seeds of moringa and tamarind can be used in the production of biofuels.
Which of the statements given above are correct?

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

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


13. Which of the following leguminous plant is also a petroplant?

(a) Pigeon-pea
(b) Pea
(c) Gram
(d) Pongam

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


14. The plants commonly known as (Petro-crops), they are rich in

1. Carbohydrates
2. Hydrocarbon
3. Protein
4. Lipids

Code :

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

[U.P.P.C.S. (Mains) 2009]


15. The first bio-diesel plant of the country is being established in –

(a) Andhra Pradesh
(b) Madhya Pradesh
(c) Maharashtra
(d) Tamil Nadu

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


16. Which of the following plant is used for ‘bio-diesel’ –

(a) Sugarcane
(b) White carrot
(c) Senna
(d) Jatropha curcas

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


17. Which one of the following is a bio-diesel plant ?

(a) Guggal
(b) Rosha grass
(c) Jatropha
(d) Java grass

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


18. Which plant is known as bio-diesel plant?

(a) Isabgol
(b) Belladona
(c) Ezadirecta
(d) Jatropha

[M.P.P.C.S. (Pre) 2006]


19. In the context of alternative sources of energy, ethanol as a viable bio-fuel can be obtained from :

(a) Potato
(b) Rice
(c) Sugarcane
(d) Wheat

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


20. Molasses is an excellent raw material for :

(a) Acetic acid
(b) Glycerine
(c) Power alcohol
(d) Urea

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


21. We obtain chilgoza from the seed of species –

(a) Pine
(b) Palm
(c) Cycas
(d) Cedar

[U.P.P.C.S. (Pre) 2009]


22. The chief mosquito repellent is obtained from –

(a) Basil (Tulsi)
(b) Lemon (Nibu)
(c) Margo (Neem)
(d) Turmeric (Haldi)

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


23. Match List-I and List-II and select the correct answer from the codes given the lists :

List-I (Plant) List-II (Use)
A. Brahmi 1. Anti-diabetic
B. Sadabahar 2. Carminative
C. Pudina 3. Expectorant
D. Tulsi 4. Brain Tonic

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

[U.P.P.C.S. (Mains) 2004]
[U.P.P.C.S. (Mains) 2008]


24. Soft drinks such as cocoa contain significant quantities of :

(a) Caffeine
(b) Nicotine
(c) Tannin
(d) Renin

[I.A.S. (Pre) 2000]


25. The alkaloid caffeine is present in :

(a) Tea only
(b) Coffee only
(c) Tea and coffee both
(d) Lemon water

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


26. The most important stimulant present in tea leaves is

(a) Caffeine
(b) Phenylalanine
(c) Brucine
(d) Theobromine

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


27. Seaweeds are an important source of which one of the following?

(a) Sulphur
(b) Chlorine
(c) Bromine
(d) Iodine

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


28. Consider the following :
1. Camphor 2. Chicory
3. Vanilla
Which of the above is/are plant product(s)?

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

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


29. ‘Kuttu’ flour is obtained from –

(a) Tapioca
(b) Fagopyrum
(c) Plantago
(d) Eleusine

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


30. In making the saffron spice, which one of the following parts of the plant is used?

(a) Leaf
(b) Petal
(c) Sepal
(d) Stigma

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


31. Which of the following part in peppermint has maximum percentage of oil ?

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

[U.P.P.C.S. (Pre) 2009]


32. Which of the following substances is obtained from a tree?

(a) Asafoetida
(b) Bitumen
(c) Tincal
(d) None of the above

[U.P.P.C.S. (Pre) 2020]


33. Match List-I with List-II and select the correct answer using the code given below the lists :
List-I List-II
(Product) (Source)
A. Opium 1. Bark
B. Hing 2. Root
C. Rubber 3. Fruit
D. Quinine 4. Stem

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

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


34. Asafoetida is obtained from :

(a) Exudation from the stem
(b) Extraction from roots
(c) Extraction from fruits
(d) Extraction from leaves

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


35. Quinine which is a major drug for malaria is obtained from-

(a) Angiosperm
(b) Bacteria
(c) Yeast
(d) Algae

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


36. Quinine, the effective medicine in the treatment of malaria, is extracted from :

(a) Bark of Cinnamon
(b) Bark of Cinchona
(c) Leaves of Ocimum
(d) Bark of Acacia Catechu

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


37. Quinine, used to treat malaria is obtained from which plant’s part ?

(a) Leaf
(b) Root
(c) Bark
(d) Flower

[Uttarakhand U.D.A./L.D.A. (Pre) 2007]
[Uttarakhand P.C.S. (Pre) 2002]


38. In which part of the cinchona plant quinine occurs naturally?

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

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


39. The Arteether medicine which is used to cure malaria is obtained from a –

(a) Seeded plant
(b) Fungus
(c) Bacteria
(d) Algae

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


40. The drug obtained from the bark of cinchona was used for treating malaria. The synthetic drug which replaced
the natural product is :

(a) Chloromycetin
(b) Chloroquine
(c) Tetracycline
(d) Ampicillin

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


41. Hydroxychloroquine drug used for the treatment of CORONA patients is obtained from the bark of which of the following plants?

(a) Aswagandha
(b) Sarpagandha
(c) Cinchona
(d) Aloe vera

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


42. Cork is obtained from which of the following plant?

(a) Dalbergia
(b) Cedrus
(c) Quercus
(d) Argemone

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


43. Tapa cloth is obtained from the plants of which one of the following family?

(a) Asclepiadaceae
(b) Moraceae
(c) Graminae
(d) Malvaceae

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