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

The stalk of ovule is called

  1. pedicel

  2. petiole

  3. placenta

  4. funicle

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

It is a filamentous stalk attaching a seed or ovule to the placenta.

Multiple choice

Which of the following statements are false?

  1. In C4 plants, CO2 fixation occurs twice.
  2. Kranz type leaf anatomy is found in C3 plants.
  3. Bundel sheath is not found in C3 plants.
  4. C4 plants occur in all types of climates.

  1. 1 and 2

  2. 1 and 4

  3. 2 and 3

  4. 2 and 4

  5. 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Kranz type leaf anatomy is found in C4 plants. Leaves of C3 plants do not show Kranz anatomy. C3 plants occur in all types of climates, whereas C4 plants occur in tropical climates.

Multiple choice

Match the entries in column - I and column - II and select the correct answer.

 
Column - I
Column - II
P. Totipotency 1. Ability of a single cell to divide and produce all of the differentiated cells in an organism
Q. Apogamy 2. Formation of sporophyte directly from gametophyte without gamete formation
R. Allogamy 3. Cross pollination
S. Apomixis 4. Formation of new individuals directly through asexual reproduction without involving the formation and fusion of gametes.

  1. P - 1, Q - 2, R - 3, S - 4

  2. P - 2, Q - 1, R - 4, S - 3

  3. P - 1, Q - 3, R - 2, S - 4

  4. P - 2, Q - 3, R - 1, S - 4

  5. P - 3, Q - 2, R - 4, S - 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. Apogamy is the formation of sporophyte directly from gametophyte without gamete formation. Allogamy is the term used for cross pollination. Apomixis is the formation of new individuals directly through asexual reproduction without involving the formation and fusion of gametes.

Multiple choice

The layer of periderm is composed of

  1. cork cambium and bark

  2. cork cambium and secondary cortex

  3. cork cambium, secondary cortex and cork

  4. cork, bark and secondary cortex

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

Periderm is composed of cork cambium, secondary cortex and cork.

Multiple choice

Growth rings are formed due to the activity of

  1. extra stelar cambium

  2. intra stelar cambium

  3. primary cambium

  4. intercalary cambium

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

An annual formation of wood in plants, consisting of two concentric layers, one of springwood and one of summerwood, resulting in annual ring formation helped by intercalary cambium.