NEET Botany — MCQ Practice Questions & Answers

Question 1

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

Accepted Answer

Correct answer: C. Drought resistance — Bt technology specifically transfers bacterial genes for insecticidal proteins. Drought resistance requires different genes and mechanisms.

Answer

A. Insect resistance

Answer

B. Herbicide tolerance

Answer

D. Disease resistance to insects

Question 2

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

Accepted Answer

Correct answer: B. Development of insect resistance to Bt toxin — Repeated exposure to Bt toxin can lead to the evolution of resistant insect populations, a major concern in sustainable agriculture.

Answer

A. Reduced photosynthesis

Answer

C. Increased water requirement

Answer

D. Loss of chlorophyll

Question 3

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

Accepted Answer

Correct answer: B. Southern blotting — Southern blotting detects integrated DNA sequences in the plant genome, confirming stable genetic transformation.

Answer

A. Northern blotting

Answer

C. Western blotting

Answer

D. PCR alone

Question 4

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

Accepted Answer

Correct answer: B. Produces genetically identical clones directly — Somatic embryogenesis produces complete plants directly from embryos, ensuring genetic fidelity better than organogenesis which may show variations.

Answer

A. Faster plant regeneration

Answer

C. Requires less nutrients

Answer

D. Uses less space

NEET Botany - MCQ Practice Questions