NEET (UG)

Practice Test 1 — Anatomy of Flowering Plants

12 questions • 18 minutes • auto-graded with full solutions

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Section A — MCQ (Single Correct)

Question 1

Primary growth in length at the root and shoot tips is due to the:

Solution: Apical meristems cause primary (length) growth.

Question 2

Which cells are living but lack a nucleus at maturity?

Solution: Sieve tube elements are enucleate yet living.

Question 3

Casparian strips are a feature of the:

Solution: Casparian strips occur in the endodermis.

Question 4

Scattered, closed vascular bundles are characteristic of a:

Solution: Monocot stems have scattered, closed bundles.

Question 5

Palisade parenchyma is located in the leaf toward the:

Solution: Palisade tissue lies just below the upper epidermis.

Question 6

Polyarch xylem (many strands) is seen in the:

Solution: Monocot roots are polyarch.

Question 7

Secondary phloem is cut off by the vascular cambium toward the:

Solution: Secondary phloem forms on the outer face of the cambium.

Question 8

Lenticels are meant for:

Solution: Lenticels allow gas exchange through the bark.

Section B — Assertion & Reason

Question 9

A: Monocot stems generally cannot undergo secondary growth.
R: Their vascular bundles are closed, lacking cambium between xylem and phloem.

Solution: Absence of cambium (closed bundles) is exactly why secondary growth is absent — R explains A.

Question 10

A: The age of a tree can be estimated by counting its annual rings.
R: The vascular cambium produces one ring of spring and autumn wood each year.

Solution: One ring per year is precisely why ring count gives age — R explains A.

Question 11

A: Sclerenchyma provides mechanical support even though its cells are dead.
R: Its cells have thin, unlignified, living walls.

Solution: A is true, but R is false — sclerenchyma walls are THICK and LIGNIFIED, not thin/unlignified.

Question 12

A: Bulliform cells help grasses conserve water.
R: On losing water they shrink and roll the leaf inward, reducing the exposed surface.

Solution: Rolling the leaf to cut transpiration is how they conserve water — R explains A.