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

Which of the following structures surrounds the stomata?

  1. Pollen grains

  2. Guard cells

  3. Petals

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

Stomata are small apertures for which opening and closing is controlled by a pair of cells known as guard cells. Pollen grains and petals are parts of flower and mitochondria are cell organelles. 

Multiple choice

Roots of aquatic plants are devoid of

  1. root cap and side branches

  2. side branches

  3. root cap

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Most of the hydrophytes lack true roots due to the availability of plenty of water.

Multiple choice

Which of the following features does not characterise plants?

  1. Large vacuoles

  2. Presence of centrioles

  3. Presence of plastids

  4. Presence of cell wall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Centrioles are present in the cells of most eukaryotes, e.g. those of animals. However, they are absent from conifers (pinophyta) and flowering plants (angiosperms). 

Multiple choice

Unicellular hair on root occur in

  1. certain area of root

  2. certain environments

  3. certain span of life

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Unicellular hair on root occur in the root hair zone.

Multiple choice

Pogostemon bear roots are called

  1. fibrous

  2. foliar

  3. fusiform

  4. None of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Some foliar buds can produce foliar roots, e.g. Bryophyllum, Begonia and Pogostemon.

Multiple choice

Root pocket is found in

  1. duckweed and water hyacinth

  2. duckweed and mangifera

  3. water hyacinth and cassia

  4. mangifera and cassia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The root cap is absent in some parasitic plants and some aquatic plants, in which a sac-like structure called the root pocket may form instead. These are present in duckweed and water hyacinth.

Multiple choice

Partial root parasites are

  1. rufflesia and vanda

  2. vandal and striga

  3. rafflesia and striga

  4. rafflesia and vanda
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rafflesia and striga are partial root parasites.

Multiple choice

Mustlatoe is a

  1. partial stem parasite

  2. total stem parasite

  3. partial root parasite

  4. total root parasite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mustlatoe is a partial stem parasite.