NEET Botany 3

Question 1

Which of the following processes occurs in the stroma of chloroplasts?

Accepted Answer

Calvin cycle

Answer

The Calvin cycle (dark reactions) takes place in the stroma of chloroplasts, where CO2 is fixed and carbohydrates are synthesized.

Question 2

Secondary growth in dicot stems occurs due to activity of:

Accepted Answer

Lateral meristem (vascular cambium)

Answer

Vascular cambium (lateral meristem) is responsible for secondary growth, producing secondary xylem (wood) and secondary phloem.

Question 3

The term 'totipotency' in plants means:

Accepted Answer

Ability of a cell to regenerate a complete plant

Answer

Totipotency is the ability of a single plant cell to develop into a complete organism, which is the basis of plant tissue culture.

Question 4

Which pigment absorbs red and far-red light and controls photoperiodism?

Accepted Answer

Phytochrome

Answer

Phytochrome is a photoreceptor pigment that exists in two interconvertible forms (Pr and Pfr) and regulates photoperiodism and other light-mediated responses.

Question 5

Which of the following is an example of a syncarpous gynoecium?

Accepted Answer

Tomato

Answer

Tomato has a syncarpous gynoecium where the carpels are fused together, unlike apocarpous gynoecia where carpels are free.

NEET - National Eligibility cum Entrance Test Practice Test

NEET - National Eligibility cum Entrance Test Practice Test

NEET Botany 3