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

How is the lotus different from a water-lily?

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

The lotus is known by various names as the Indian Lotus, Sacred Lotus, Bean of India or simply lotus. It is an aquatic flowering plant which flowers for one or more years. It is sometimes mistaken for a water-lily which has a completely different structure.

It is majorly white in colour with hues of other colours too. The common Egyptian “white” lotus is a water lily. The white lotus opens when the sun sets, while the blue water lily opens in the morning. The white lotus is a plant growing in wetland areas with water of two meters in depth which blooms in the night.

The lotus flower symbolises awakening to the spiritual reality in Hinduism. One thing which is worth noting about the lotus flower is that it is unstained even though it grows in the mud.

  1. They are different in colour.

  2. They are different in case of flowering.

  3. They are different in structure.

  4. They are different in water.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is sometimes mistaken for a water-lily which has a completely different structure.

Multiple choice

When does the white lotus open?

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

The lotus is known by various names as the Indian Lotus, Sacred Lotus, Bean of India or simply lotus. It is an aquatic flowering plant which flowers for one or more years. It is sometimes mistaken for a water-lily which has a completely different structure.

It is majorly white in colour with hues of other colours too. The common Egyptian “white” lotus is a water lily. The white lotus opens when the sun sets, while the blue water lily opens in the morning. The white lotus is a plant growing in wetland areas with water of two meters in depth which blooms in the night.

The lotus flower symbolises awakening to the spiritual reality in Hinduism. One thing which is worth noting about the lotus flower is that it is unstained even though it grows in the mud.

  1. It opens in the morning.

  2. It opens in the evening.

  3. It opens at sunrise.

  4. It opens in the afternoon.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is stated in the passage, "white lotus opens in the evening when the sun sets."

Multiple choice

What type of plant is the lotus?

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

The lotus is known by various names as the Indian Lotus, Sacred Lotus, Bean of India or simply lotus. It is an aquatic flowering plant which flowers for one or more years. It is sometimes mistaken for a water-lily which has a completely different structure.

It is majorly white in colour with hues of other colours too. The common Egyptian “white” lotus is a water lily. The white lotus opens when the sun sets, while the blue water lily opens in the morning. The white lotus is a plant growing in wetland areas with water of two meters in depth which blooms in the night.

The lotus flower symbolises awakening to the spiritual reality in Hinduism. One thing which is worth noting about the lotus flower is that it is unstained even though it grows in the mud.

  1. Flowering

  2. Non-flowering

  3. Dirty

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

It is an aquatic flowering plant.

Multiple choice

When does the blue lily bloom?

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

The lotus is known by various names as the Indian Lotus, Sacred Lotus, Bean of India or simply lotus. It is an aquatic flowering plant which flowers for one or more years. It is sometimes mistaken for a water-lily which has a completely different structure.

It is majorly white in colour with hues of other colours too. The common Egyptian “white” lotus is a water lily. The white lotus opens when the sun sets, while the blue water lily opens in the morning. The white lotus is a plant growing in wetland areas with water of two meters in depth which blooms in the night.

The lotus flower symbolises awakening to the spiritual reality in Hinduism. One thing which is worth noting about the lotus flower is that it is unstained even though it grows in the mud.

  1. It blooms in the dark.

  2. It blooms in the afternoon.

  3. It blooms in the night.

  4. It blooms in the morning.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the answer.

Multiple choice

Apomixis results in the development of a

  1. new organism without fusion of gametes

  2. new organism from fusion products of gametes

  3. embryo from endosperm

  4. embryo from nucellus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Apomixis causes certain changes in the female reproductive system such that female gametes develop without meiosis, leading to the development of embryos without fertilisation.

Multiple choice

Which infloresence is present in ocimum?

  1. Cyathium

  2. Verticillaster

  3. Thyrsus

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

It signifies a peculiar type of inflorescence having a number of simple dichasial cymes arranged in a racemose manner on an elongated peduncle. Hence, it is also called mixed type, e.g. ocimum.

Multiple choice

Hypanthodium signifies to a peculiar type of

  1. ovary

  2. inflorescence

  3. flower

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

Hypanthodium signifies to a peculiar type of inflorescence. The penducle becomes fleshy, flattened and forms a hollow cup with a small opening at the top. The male and female flowers are borne on the inner wall of the cup or receptacles with male flowers are the base of receptacle. The flowers are usually sessile, e.g. rubber.

Multiple choice

The stem of Ipomoea is an example of

  1. Lianas

  2. Twiners

  3. Decumbent trailers

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

These plants are characterised by the presence of long, thin & slender stems with branches. They climb by twining bodily around trees and shrubs, e.g. ipomoea.

Multiple choice

Which cyme is observed in Euphorbia?

  1. Uniparous cyme

  2. Biparous cyme

  3. Triparous cyme

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

In multiparous, more than two branches develop at a time. It is also known as polychasial, e.g. Euphorbia.

Multiple choice

The stipules present in Ficus elastica is

  1. spinous stipules

  2. tendrillar stipules

  3. opposite stipules

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

Here the stipules of a leaf fuses by their outer margins in a position opposite to the leaf attachment, e.g. Ficus elastica.

Multiple choice

In Opuntia, the stem gets modified into

  1. bulbil

  2. cladodes

  3. stem thorn

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

It is defined as a flattened stem consisting of several internodes functioning as a leaf. In Opuntia, the stem is modified into a green flattened structure called phylloclade.