In the alternation of generations, which phase shows maximum reduction in bryophytes?

The correct answer is B: Sporophyte is reduced and dependent. In bryophytes, the sporophyte is reduced (2n generation) and dependent on the dominant gametophyte. This reflects their primitive nature in plant evolution.

Which of the following processes does NOT require energy (ATP)?

The correct answer is B: Diffusion. Diffusion is a passive process that does not require ATP; substances move along the concentration gradient.

Which anatomical feature distinguishes the anatomy of a typical dicot leaf petiole from that of a monocot?

The correct answer is A: Presence of multiple scattered vascular bundles in dicots. Dicot petioles typically have multiple vascular bundles arranged in a ring or scattered pattern, while monocots have scattered bundles throughout.

Which of the following is NOT a function of collenchyma?

The correct answer is C: Transport of water and minerals. Collenchyma provides mechanical support with flexibility but does not transport water and minerals; that function belongs to xylem.

The endodermis in roots is characterized by the presence of

The correct answer is A: Casparian strips made of suberin. The endodermis contains Casparian strips—bands of suberin and lignin that prevent lateral movement of water and minerals, forcing them through the cell.

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NEET Botany
Plant Kingdom

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

21 Q 3 Topics Take Mock Test

Difficulty: All Easy Medium Hard 21–21 of 21

Topics in NEET Botany

All Plant Kingdom 100 Plant Anatomy 100 Plant Physiology 76

Q.21 Hard Plant Kingdom

Double fertilization in angiosperms involves:

A Fusion of egg and sperm, sperm and synergid

B Fusion of egg and two sperms

C Fusion of egg and central cell nucleus

D Fusion of sperm with all egg nuclei

Correct Answer: C. Fusion of egg and central cell nucleus

EXPLANATION

Double fertilization: one sperm fuses with egg nucleus → zygote (diploid); second sperm fuses with central cell → endosperm (triploid). Unique to angiosperms.

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NEET Botany Plant Kingdom

NEET Botany
Plant Kingdom