Biology ยท 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

An endosperm in plants is

  1. 1n

  2. 2n

  3. 3n

  4. 4n

  5. 5n
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Endosperm in plants is 3n as it is formed by the fusion of male gamete (1n) and secondary nucleus (2n).

Multiple choice

Which of the following is not true about ovule?

  1. It is a small structure contained in the ovary.

  2. It is surrounded by integuments.

  3. It has an opening to one side called micropyle.

  4. It contains single polar nuclei.

  5. It also contains two synergids and three antipodal cells.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The embryo sac contains an egg and two polar nuclei.

Multiple choice

Which of the following is not true about micropyle?

  1. It is situated next to the testa.

  2. It is the pore through which pollen tube enters the ovule during fertilization.

  3. The seeds absorb water through micropyle.

  4. It allows diffusion of respiratory gases.

  5. It helps in the germination of seed.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Micropyle is present next to the hilum.

Multiple choice

What is an epicotyl?

  1. Part of plant embryo above the cotyledon

  2. Part of plant embryo below the cotyledon

  3. Area of plant embryo between cotyledons and radicle

  4. Special food storing tissue in a plant embryo

  5. Sheath that protects the plumule
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The part of the plant embryo above the cotyledons is called epicotyl.

Multiple choice

Which of the following is a zygomorphic flower?

  1. Tulip

  2. Poppy

  3. Daffodil

  4. Mustard

  5. Tulsi
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

If a flower has only one line of symmetry, i.e. there is only one way to divide it to get two equal halves, it is called zygomorphic flower. For example, sweet pea, beans, tulsi, etc.

Multiple choice

Which of the following plants show(s) cymose inflorescence?

  1. Sweet pea

  2. Mustard

  3. Coriander

  4. Jasmine

  5. Both sweet pea and mustard
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Jasmine plant shows cymose inflorescence in which the tip of the main axis ends in a single flower and the subsequent flowers arise on the lower branches.

Multiple choice

Which of the following is true about spadix inflorescence?

  1. Outer pedicels are progressively longer than the inner ones.

  2. Stalk has densely arranged flowers.

  3. Sessile flowers are arranged along the axis.

  4. Small spikes have one or more flowers.

  5. Flowers are crowded on a compound receptacle.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In spadix inflorescence, stalk has densely arranged flowers around the stalk, which are enclosed or accompanied by a spathe.