Biology · Science General

Botany and Plant Science

4,989 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

Within the plant, the organic food is stored by

  1. phloem fibres

  2. phloem parenchyma

  3. companion cells

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

These are described as the phloem components consisted of living parenchyma cells, which are found in between the sieve tubes. They are meant only for storage of organic food.

Multiple choice

Which among the following does not characterise the epidermis?

  1. It give rise to epidermal hairs.

  2. On stem and leaf, it is surrounded by cuticle.

  3. Stomatas are completely absent on it.

  4. It is a derivative of protoderm.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The epidermis of green parts of plants like leaf and herbaceous stem posses many stomata which are surrounded by guard cells.

Multiple choice

The outermost covering of the stem is termed as

  1. epidermis

  2. hypodermis

  3. cortex

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

It is described as the outermost covering of the stem. It is represented by a single layer of densely arranged, barrel-shaped parenchymatous cells having no intercellular spaces.

Multiple choice

The nature of the endosperm nucleus is

  1. haploid

  2. triploid

  3. diploid

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

Endosperm is formed when the two sperm nuclei inside a pollen grain reach the interior of an embryo sac or female gametophyte. One sperm nucleus fertilizes the egg, forming a zygote, while the other sperm nucleus usually fuses with the two polar nuclei at the center of the embryo sac, forming a primary endosperm cell its nucleus is often called the triple fusion nucleus resulting in a triploid of endosperm nuclues.

Multiple choice

In which of the following would you expect to find glyoxysomes?

  1. Root hairs

  2. Endosperm of wheat

  3. Palisade cells in leaf

  4. Endosperm of castor

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

Glyoxysomes are microbodies found in seeds and possess enzymes capable of mobilising lipids, converting them into sugars to supply energy needed during germination. Hence, they are found in castor endosperm.

Multiple choice

Which of the following are amphipathic glycosides?

  1. Polyphenols

  2. Phytosterols

  3. Alkaloids

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

Saponins is a class of chemical compounds, one of many secondary metabolites found in natural sources with saponins found in particular abundance in various plant species. Specifically, these are amphipathic glycosides grouped phenomenologically by the soap-like foaming they produce when shaken in aqueous solutions.

Multiple choice

What word in the passage means 'having a pleasant and distinctive smell'?

Directions: Read the given passage carefully and answer the question that follows:


Small Warty Acampe is a flowering species that produces aromatic tiny flowers. It grows in India, in the Eastern Himalayas up to a height of 200 meters. It is also found in adjoining areas of Africa, Malaysia and Indonesia in small patches. It is a group of small flowers with a single stem that can be either straight or curved. Due to their large size and small flowers, they are rarely cultivated. The plant's long, rubber-like leaves are divided into two parts. These species forms slow-growing, medium-sized stems that form very large plant mass in nature. The hard parts of its flower look alike. The central column is short and has two pollen grains. Its powder is used sometimes as an energy supplement in India, though the plants themselves infamously require high-maintenance and are hard to grow.

  1. Pollen

  2. Infamously

  3. Curved

  4. Aromatic

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

Aromatic means having a pleasant and distinctive smell.

Multiple choice

What type of flowers does Small Warty Acampe bear?

Directions: Read the given passage carefully and answer the question that follows:


Small Warty Acampe is a flowering species that produces aromatic tiny flowers. It grows in India, in the Eastern Himalayas up to a height of 200 meters. It is also found in adjoining areas of Africa, Malaysia and Indonesia in small patches. It is a group of small flowers with a single stem that can be either straight or curved. Due to their large size and small flowers, they are rarely cultivated. The plant's long, rubber-like leaves are divided into two parts. These species forms slow-growing, medium-sized stems that form very large plant mass in nature. The hard parts of its flower look alike. The central column is short and has two pollen grains. Its powder is used sometimes as an energy supplement in India, though the plants themselves infamously require high-maintenance and are hard to grow.

  1. Aromatic tiny flowers

  2. Fleshy

  3. Erect

  4. Curved

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

"...a flowering species that produces aromatic tiny flowers", gives us the answer.

Multiple choice

Up to what height does Small Warty Acampe grow in the Eastern Himalayas?

Directions: Read the given passage carefully and answer the question that follows:


Small Warty Acampe is a flowering species that produces aromatic tiny flowers. It grows in India, in the Eastern Himalayas up to a height of 200 meters. It is also found in adjoining areas of Africa, Malaysia and Indonesia in small patches. It is a group of small flowers with a single stem that can be either straight or curved. Due to their large size and small flowers, they are rarely cultivated. The plant's long, rubber-like leaves are divided into two parts. These species forms slow-growing, medium-sized stems that form very large plant mass in nature. The hard parts of its flower look alike. The central column is short and has two pollen grains. Its powder is used sometimes as an energy supplement in India, though the plants themselves infamously require high-maintenance and are hard to grow.

  1. 300 meters

  2. 200 meters

  3. 100 meters

  4. 50 meters

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

"Eastern Himalayas up to an elevation of 200 meters" leads us to this option being correct.