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

Velamen is found in

  1. assimilatory roots

  2. epiphytic roots

  3. parasitic roots

  4. mycorrhizal roots

  5. respiratory roots
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Epiphytic roots have a  spongy tissue called velamen which helps in absorbing and storing water.

Multiple choice

Velamen tissue is found in

  1. epiphytes

  2. hydrophytes

  3. xerophytes

  4. parasitic roots

  5. respiratory roots
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In epiphytes, the aerial roots are surrounded by a spongy tissue known as velamen tissue.

Multiple choice

Quiescent structure is present in

  1. shoot apex

  2. root apex

  3. both 1 and 2

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

The Quiescent Centre is a group of cells, up to 1,000 in number, in the form of a hemisphere, with the flat face towards the root tip.

Multiple choice

Endosperm of an angiospermic plant is

  1. triploid

  2. diploid

  3. haploid

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

Endosperm is the tissue produced in the seeds of most flowering plants around the time of fertilisation. It is triploid in nature.

Multiple choice

Opening of a flower is an example of

  1. spontaneous movement

  2. hyponastic movement

  3. epinastic movement

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

When the movement occurs due to faster growth on the upper surface of an organ, it is said to be epinastic movement.

Example: Opening of floral buds

Multiple choice

A root was described as adventitious root because it

  1. arose form plumule

  2. was used variously for storage of food

  3. was swollen

  4. grew in marshy places
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Adventitious roots arise from an organ other than the root; usually a stem, or sometimes a leaf. They are especially numerous on underground stems. It arises from plumule.

Multiple choice

Circinate vernation is present in

  1. moss

  2. fern

  3. algae

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

Circinate vernation is the manner in which a fern frond emerges. As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond (and each subdivision of the frond) is protected within a coil.

Multiple choice

Circinate vernation is the characteristic feature of fern. It refers to

  1. coiling of young leaves

  2. heterophilly

  3. arrangement of leaves on stem

  4. attachment of sori on leaves

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Circinate vernation is the manner in which a fern frond emerges. As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond (and each subdivision of the frond) is protected within a coil.