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.

Which of the following is a characteristic feature of asexual reproduction in plants?

The correct answer is B: Produces genetically identical offspring. Asexual reproduction produces genetically identical clones of the parent plant without involving meiosis or gamete fusion.

Stomatal opening is primarily regulated by the accumulation of which osmotically active solute in guard cells?

The correct answer is C: Potassium ions (K+). K+ accumulation in guard cells lowers the water potential, causing water influx and turgor increase, leading to stomatal opening. This is the primary mechanism.

Which feature distinguishes gymnosperms from angiosperms?

The correct answer is A: Absence of flowers and enclosed seeds. Gymnosperms produce naked seeds not enclosed in a fruit and lack true flowers. Angiosperms have enclosed seeds within fruits and possess flowers.

The presence of sclerenchyma fibers in the phloem tissue (phloem fibers) primarily serves to:

The correct answer is A: Provide mechanical strength while allowing phloem translocation. Phloem fibers (bast fibers) provide mechanical support to vascular bundles and stems while permitting the translocation function of sieve tubes and companion cells.

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NEET Botany

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

214 Q 7 Topics Take Mock Test

Difficulty: All Easy Medium Hard 211–214 of 214

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.211 Medium Plant Kingdom

In ferns, the photosynthetically active independent structure is:

A Rhizoid

B Prothallus

C Sporophyll

D Sorus

Correct Answer: B. Prothallus

EXPLANATION

The prothallus is the gametophyte of ferns - a small, green, heart-shaped structure that is photosynthetically active and independent.

Test

Q.212 Medium Plant Kingdom

Pteridophytes first acquired which adaptation for terrestrial life?

A Seeds

B Vascular tissue

C Flowers

D Cuticle

Correct Answer: B. Vascular tissue

EXPLANATION

Pteridophytes were the first plants to develop true vascular tissue (xylem and phloem), allowing them to grow taller and transport water efficiently.

Test

Q.213 Medium Plant Kingdom

The spore-bearing structure in Riccia (a liverwort) is called:

A Sporangium

B Sporophyte

C Capsule

D Strobilus

Correct Answer: C. Capsule

EXPLANATION

In bryophytes like Riccia, the capsule is the sporophyte that produces spores. It remains embedded in the gametophyte.

Test

Q.214 Medium Plant Kingdom

Which structure in bryophytes prevents water loss?

A Rhizoids

B Cuticle

C Stomata

D Xylem vessels

Correct Answer: B. Cuticle

EXPLANATION

Bryophytes have a waxy cuticle that reduces water loss, though it's not as effective as in higher plants due to absence of stomata.

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