The endodermis in roots is primarily characterized by the presence of:

The correct answer is A: Casparian strips made of suberin and lignin. Casparian strips are band-like thickening of suberin and lignin on radial and transverse walls of endodermis that regulate water and mineral movement into the stele.

Which of the following plants reproduces primarily through runners or stolons?

The correct answer is B: Strawberry. Strawberry reproduces vegetatively through runners (stolons) that produce new plants at nodes, enabling rapid vegetative propagation.

Which of the following biomes receives the least amount of rainfall annually?

The correct answer is C: Desert. Deserts receive less than 25 cm (10 inches) of rainfall annually, making them the driest biomes on Earth.

Which gymnosperms have motile sperms?

The correct answer is D: Both B and C. Cycas and Ginkgo retain the primitive character of motile sperms, while other gymnosperms like Pinus have non-motile sperm.

Which of the following is an example of a renewable resource?

The correct answer is C: Solar energy. Solar energy is a renewable resource that can be naturally replenished. Coal, petroleum, and natural gas are non-renewable fossil fuels.

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NEET Botany
Biotechnology in Plants

Botany questions for NEET UG — Plant Anatomy, Physiology, Reproduction, Ecology.

4 Q 7 Topics Take Mock Test

Difficulty: All Easy Medium Hard 1–4 of 4

Topics in NEET Botany

All Plant Kingdom 100 Plant Anatomy 100 Plant Physiology 100 Reproduction in Plants 60 Genetics & Heredity 20 Ecology & Environment 20 Biotechnology in Plants 20

Q.1 Hard Biotechnology in Plants

What is the main advantage of using somatic embryogenesis over organogenesis in plant tissue culture?

A Faster plant regeneration

B Produces genetically identical clones directly

C Requires less nutrients

D Uses less space

Correct Answer: B. Produces genetically identical clones directly

EXPLANATION

Somatic embryogenesis produces complete plants directly from embryos, ensuring genetic fidelity better than organogenesis which may show variations.

Test

Q.2 Hard Biotechnology in Plants

Which technique is used to confirm the integration of foreign DNA into plant genome?

A Northern blotting

B Southern blotting

C Western blotting

D PCR alone

Correct Answer: B. Southern blotting

EXPLANATION

Southern blotting detects integrated DNA sequences in the plant genome, confirming stable genetic transformation.

Test

Q.3 Hard Biotechnology in Plants

What is the concern associated with widespread cultivation of Bt crops?

A Reduced photosynthesis

B Development of insect resistance to Bt toxin

C Increased water requirement

D Loss of chlorophyll

Correct Answer: B. Development of insect resistance to Bt toxin

EXPLANATION

Repeated exposure to Bt toxin can lead to the evolution of resistant insect populations, a major concern in sustainable agriculture.

Test

Q.4 Hard Biotechnology in Plants

Which of the following traits cannot be introduced into plants through Bt technology?

A Insect resistance

B Herbicide tolerance

C Drought resistance

D Disease resistance to insects

Correct Answer: C. Drought resistance

EXPLANATION

Bt technology specifically transfers bacterial genes for insecticidal proteins. Drought resistance requires different genes and mechanisms.

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NEET Botany Biotechnology in Plants

NEET Botany
Biotechnology in Plants