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

Lateral roots originate from ____.

  1. promeristem

  2. pericycle

  3. lateral meristem

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

Pericycle is a region that lies immediately below the endodermis. It is represented by a single layer of parenchyma cells. It gives rise to lateral roots.

Multiple choice

Which of the following structures produces pollen grains?

  1. Pistil

  2. Anther

  3. Stigma

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

At the tip of the filament there is a bag like structure called the anther which contains thousands of pollen grains .The anther when ripe bursts open and releases all the pollen into the air or they settle on top of the stamen.

Multiple choice

Number of male nuclei in pollen tube is

  1. two

  2. one

  3. three

  4. four
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pollen tube arises from the tube nucleus inside the pollen grain and grows through the tissue of the style and ovary. It has two male nuclei. Eventually, the pollen tube reaches the ovule, permitting the sperm nuclei to reach the ovule and fertilize the egg cells.

Multiple choice

Sepals constitutes

  1. pistil

  2. stamen

  3. calyx

  4. corolla
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calyx is one of the main parts of a flower. It is the first whorl. It is made up of sepals and is green in color. Its function is to protect the flower during the bud stage.