Prelims Revision Series | Science & Tech | Basic Plant Physiology | 20

May 12, 2023

Which of the following combination of features would you observe in grass?

(A) Parallel venation and fibrous root
(B) Parallel venation and tap root
(C) Reticulate venation and fibrous root
(D) Reticulate venation and tap root

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Answer : A

Read the following sentences about photosynthesis:
(i) Sunlight, carbon dioxide, chlorophyll and water are necessary.
(ii) Oxygen is absorbed.
(iii) Leaves carry out photosynthesis.
(iv) Proteins are made during photosynthesis.
Choose the correct pair of sentences that are true to photosynthesis

(A) (iii) and (iv)
(B) (i) and (iii)
(C) (ii) and (iv)
(D) (i) and (iv)

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Answer : B

Following are some features of plants
(i) They lose a lot of water through transpiration.
(ii) Their leaves are always broad and flat.
(iii) They lose very little water through transpiration.
(iv) Their roots grow very deep into the soil.
Which of the combination of above features are typical of desert plants?

(A) (i) and (ii)
(B) (ii) and (iv)
(C) (ii) and (iii)
(D) (iii) and (iv)

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Answer 😀

Which of the following is correct for respiration in plants?

(A) Respiration takes place only during day time.
(B) Respiration takes place only during night.
(C) Respiration takes place both during day and night.
(D) Respiration takes place only when plants are not making food.

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Answer : C

Roots developed from parts of the plant other than radicle are called

(A) Taproots
(B) Fibrous roots
(C) Adventitious roots
(D) Nodular roots

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Answer : C

The form of sugar transported through phloem is

(A) Glucose
(B) Fructose
(C) Sucrose
(D) Ribose

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Answer : C

To increase sugar production in sugarcanes, they are sprayed with

(A) IAA
(B) Cytokinin
(C) Gibberellin
(D) Ethylene

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Answer : C

Which metal ion is a constituent of chlorophyll?

(A) Iron
(B) Copper
(C) Magnesium
(D) Zinc

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Answer : C

Ethylene is used for

(A) Retarding ripening of tomatoes
(B) Hastening of the ripening of fruits
(C) Slowing down the ripening of apples
(D) Both B and C

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Answer : B

Which among the following is/are currently among the Montreux Record sites in India?
1. Chilika lake, Odisha
2. Loktak lake, Manipur
3. Keoladeo National Park, Rajasthan
Select the correct answer using the code given below:

(A) 1 and 2 only
(B) 1 and 3 only
(C) 2 and 3 only
(D) 1, 2 and 3

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Answer : C

"Miyawaki Method", is seen in the news. What's this?

(A) A tool to estimate Green House gas emissions
(B) An ancient Chinese Technique to forecast Monsoon
(C) A unique technique to grow forests.
(D) A method to clean drainage

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Answer: C

Which one of the following is not a site for in-situ method of conservation of flora?

(A) Biosphere Reserve
(B) Botanical Garden
(C) National Park
(D) Wildlife Sanctuary

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Answer :B

Bandipur Tiger Reserve, recently in news, is located in which among the following states?

(A) Karnataka
(B) Kerala
(C) Assam
(D) Andhra Pradesh

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Answer : A

Persistent organic pollutants (POPs) work their way through the food chain by accumulating in the body fat of living organisms & becoming more concentrated as they move from one creature to another. Name of this process is?

(A) Biomagnification
(B) Bioremediation
(C) Bioaccumulation
(D) Bioconcentration

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Answer : A