Topic

Plant Biology PYQs

25 previous year questions across 11 subtopics · answers and explanations included

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One question at a time, instant feedback, score at the end.

Showing 14 questions · Medium

1

Synthetic seeds are mostly derived from

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2

Skotomorphogenesis is characterized by:

MediumPhotomorphogenesis & SkotomorphogenesisView answer

3

Nod gene products:

MediumNitrogen Fixation - Nod FactorsView answer

4

Cryptochromes control photomorphogenesis in response to:

MediumPhotoreceptors - CryptochromesView answer

5

miRNAs are major regulators of gene expression. In an experiment, it was observed that gene 'X' is a direct target of miRNA 'A'. Upon overexpression of miRNA 'A' in Arabidopsis thaliana:

MediummiRNA Regulation in PlantsView answer

6

VirA and VirG form a two component signaling system during Agrobacterium infection in plants. In an experiment, VirG was mutated resulting in nonfunctional VirG protein. Which one of the following consequences is most likely?

MediumAgrobacterium & T-DNA TransferView answer

7

Which one of the following genes can be used to generate male sterile crop plants?

MediumMale Sterility in Crop PlantsView answer

8

Which one among the following is the correct function of leghaemoglobin?

MediumNitrogen Fixation - LeghaemoglobinView answer

9

A spectrum that depicts the magnitude of response of a biological system to light as a function of wavelength is called:

MediumAction Spectrum & PhotobiologyView answer

10

Which one of the following is NOT a typical feature of the hypersensitive response observed in plants during the attack of invading microbes?

MediumHypersensitive Response & Plant ImmunityView answer

11

Given below are two statements: Statement I: Large subunit of rubisco is encoded by chloroplast genome while small subunit of Rubisco is encoded by nuclear genome Statement II: Small subunit of rubisco has a transit peptide, which is cleaved off at the time…

MediumRubisco & Chloroplast GeneticsView answer

12

The most likely sub-cellular localization of NAC transcription factors is:

MediumTranscription Factors - NAC FamilyView answer

13

In plants, the cells adjacent to the egg cell in an ovule are known as

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14

Deficiency of this macronutrient causes older leaves to turn dark green or reddish purple

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