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

Pollen tube, at the time of entering in two ovules, has ______.

  1. one male gamete

  2. two male gametes

  3. three male gametes

  4. four male gametes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During fertilization in flowering plants, the pollen tube carries exactly two male gametes. One gamete fuses with the egg cell to form the zygote, while the other fuses with the polar nuclei to form endosperm - a process called double fertilization.

Multiple choice

The anther contains ______.

  1. sepals

  2. ovules

  3. carpel

  4. pollen grains
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The anther is the pollen-bearing part of a stamen in flowering plants. It contains pollen grains which are the male gametophytes. Sepals are floral leaves, ovules are in the ovary, and carpel is the female reproductive structure.

Multiple choice

In rose, prickles are

  1. exogenous

  2. endogenous

  3. modified leaves

  4. accessory buds

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

In rose, prickles are exogenous.

Multiple choice

Glumes are modified

  1. epicalyx

  2. corolla

  3. bracts

  4. pistil

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

Glumes are modified bracts.

Multiple choice

'Asteraceae' has which kind of placentation?

  1. Apical placentation

  2. Basal placentation

  3. Parietal placentation

  4. Axile placentation

  5. Marginal placentation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The basal placenta is at the base (bottom) of the ovary.