Plant Anatomy And Physiology - Study Mode

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[#406] Who among the following considered climax vegetation "as a pattern of populations corresponding to the pattern of environmental gradients"?

(A) Whittaker (1953)

(B) Churchill (1965)

(C) Odum (1966)

(D) Penfound (1952)

Correct Answer

(A) Whittaker (1953)

[#407] Consider the following statements. 1. Carbon dioxide, chlorophyll and sunlight all are essential for photosynthesis. 2. Rate of photosynthesis is maximum in red light and minimum in green light. 3. Increase in O 2 concentration decrease photosynthesis. Which of the statements given above is/are correct about photosynthesis ?

(A) 1, 2 and 3

(B) 1 and 3

(C) 1 and 2

(D) 2 and 3

Correct Answer

(A) 1, 2 and 3

[#408] Which of the following is an example of bound auxin?

(A) Indole-3-acetaldehyde

(B) Indole-3-acetonitril

(C) Glucobrassicin

(D) Indole-3-ethanol

Correct Answer

(C) Glucobrassicin

[#409] Consider the following statements and choose the correct answer: 1. The integuments of the ovule become dry and firm, the seed coat 2. Insoluble food is formed in the ovule as a result of dehydration 3. In endospermic seeds the insoluble food is stored in cotyledons 4. The ovary wall forms the fruit wall which may be hard or fleshy

(A) Only 1, 2 and 3 are true

(B) Only 1, 3 and 4 are true

(C) Only 1, 2 and 4 are true

(D) Only 2, 3 and 4 are true

Correct Answer

(C) Only 1, 2 and 4 are true

[#410] In the photosynthetic purple bacteria, the phototactic movements shown by them seem to be due to light absorbed by

(A) Xanthophylls

(B) Phyobilins

(C) Carotenoids

(D) Biliproteins

Correct Answer

(C) Carotenoids