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

Root cap is absent in ________.

  1. Lithophytes

  2. Xerophytes

  3. Mesophytes

  4. Hydrophytes

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

Hydrophytes are the aquatic plants found either in the fresh water or marine waters.

Multiple choice

Sclerenchyma occurs in

  1. mesophyll

  2. peripheral regions of stems and leaves

  3. veins of leaves

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

Sclerenchyma occurs in veins of leaves.

Multiple choice

Polyarch condition is found in

  1. monocot root

  2. dicot root

  3. monocot stem

  4. dicot stem

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

Polyarch xylem means having many protoxylem groups.This condition is common in monocot roots.

Multiple choice

Mesogamy is

  1. fusion of male and female gametes

  2. fusion of physiologically similar and morphologically different gametes

  3. entry of pollen tube through integuments

  4. None of the above

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

In mesogmay pollen tube enters the ovule of female flower, through its integuments.eg. cucurbita

Multiple choice

In which of the following features, Cycas resembles with angiosperms?

  1. Presence of vessels

  2. circinate vernation

  3. dichotomously branched leaves

  4. pollen tube is the carrier of male gametes

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

Pollen tube is formed from tube nucleus of the microspore or the pollen grain in both angiosperm and gymnosperms.The generative nucleus divides to form two male gametes which are carried by the pollen tube in both the groups.

Multiple choice

Raphe is

  1. part of flower

  2. funicle attached to ovule

  3. ridge formed by funiculus

  4. part of nucellus

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

Raphe is a longitudinal ridge formed by the funiculus on the side of certain ovules or seeds.

Multiple choice

Length of petiole increases due to the division of

  1. apical meristem

  2. lateral meristem

  3. intercalary meristem

  4. All of the above

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

Lateral meristems surround the established stem of a plant and cause it to grow laterally (larger in diameter). Vascular cambium produces secondary xylem and secondary phloem.