Biology · Science General

Botany and Plant Science

5,038 Questions

Botany and plant science delve into the biological study of plant life, covering structural anatomy, physiological processes, and reproductive mechanisms. Key topics include inflorescence patterns, root modifications, and seed development, which are vital for biology sections in medical entrance exams. This collection of practice questions helps solidify understanding of complex plant functions.

Plant ReproductionPlant AnatomyRoot ModificationsInflorescence PatternsPlant Morphology

Botany and Plant Science Questions

Multiple choice

Spongy petioles are found in

  1. xerophytic plants

  2. aquatic plants

  3. halophytes

  4. insectivorous plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Spongy petioles are found in aquatic plants. They help the plants in floating.

Multiple choice

The floral part which produces pollen grain is

  1. sepal

  2. petal

  3. anther

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The anther is the male reproductive part of a flower that produces and contains pollen grains. Sepals protect the flower bud, petals attract pollinators, and neither produces pollen.

Multiple choice

Match the following:

 
a. Nastic movement 1. It is the non-directional movement of a plant part, usually petals, in response to light.
b. Thigmonasty 2. It is the movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus.
c. Photonasty 3. It is the non-directional movement of a plant part in response to the touch of an object.

  1. a - 2, b - 1, c - 3

  2. a - 3, b - 1, c - 2

  3. a - 3, b - 2, c - 1

  4. a - 2, b - 3, c - 1

  5. a - 1, b - 3, c - 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Nastic movement is the movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus. Thigmonasty is the non-directional movement of a plant part in response to the touch of an object. Photonasty is the non-directional movement of a plant part, usually petals, in response to light.

Multiple choice

Silk of corn is/are

  1. stamens

  2. style and stigma

  3. bracts

  4. tendrils
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The silk of corn are individual style and stigma, which connect to ovule.

Multiple choice

The gametes produced by the plant with the genotype YyRr are

  1. Yy and Rr

  2. YR and yr

  3. YR, Yr, yR and yr

  4. Yy, Rr, YRand Yr
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A YyRr plant produces 4 types of gametes due to independent assortment: YR, Yr, yR, yr. Option A is incorrect because gametes are haploid (one allele per gene). Option B lists only 2 gametes, missing the recombinant types. This demonstrates Mendel's Law of Independent Assortment.

Multiple choice

Rose is a beautiful flower.

  1. Is the Rose?

  2. Is it?

  3. Aren't it?

  4. Isn't it?
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

We use 'It' in place of subject if the subject is not human beings.