NEET (UG)

Practice Test 1 — Structural Organisation in Animals

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

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Section A — MCQ (Single Correct)

Question 1

Tendons and ligaments are examples of:

Solution: Both are dense regular connective tissues.

Question 2

The lining of the small intestine is mainly:

Solution: Columnar epithelium lines the intestine for absorption/secretion.

Question 3

Which muscle is striated but involuntary?

Solution: Cardiac muscle is striated yet involuntary.

Question 4

Blood is classified as a:

Solution: Blood is a connective tissue with a fluid matrix (plasma).

Question 5

Setae of the earthworm function in:

Solution: Setae grip the soil for locomotion.

Question 6

The food-grinding organ of the cockroach is the:

Solution: The gizzard (proventriculus) grinds food; the crop stores it.

Question 7

Open circulation with a 13-chambered heart is found in:

Solution: The cockroach has open circulation and a 13-chambered heart.

Question 8

The frog releases faeces, urine and gametes through the:

Solution: All three open into the common cloaca.

Section B — Assertion & Reason

Question 9

A: Cardiac muscle can contract as a coordinated unit.
R: Its branched fibres are joined end-to-end by intercalated discs.

Solution: Intercalated discs couple the fibres, enabling coordinated contraction — R explains A.

Question 10

A: The cockroach conserves water during excretion.
R: It is uricotelic, excreting nitrogenous waste mainly as uric acid via Malpighian tubules.

Solution: Excreting insoluble uric acid needs little water — R explains A.

Question 11

A: A frog can survive being completely submerged in water for long periods.
R: It carries out cutaneous respiration through its moist skin.

Solution: Skin (cutaneous) respiration lets it exchange gases underwater — R explains A.

Question 12

A: Squamous epithelium is well suited to lining the air sacs of the lungs.
R: It is a thick, multilayered tissue specialised for protection.

Solution: A is true, but R is false — squamous epithelium is a THIN single layer for diffusion, not a thick protective one.