Which cell does not have perforated cell wall?

Correct Answer: B

Rationale: Companion cells are narrow, elongated, thin-walled, living cells which are on the sides of the sieve tubes through plasmodesmata and do not have perforated cell walls.

Correct Answer: A

Rationale: Parenchyma is simple permanent tissue cells of thin walls and contain intercellular spaces to store food, nutrients and water.

Correct Answer: C

Rationale: Pseudostratified ciliated columnar epithelium, with cilia, moves particles like mucus across its surface, as in the respiratory tract.

Correct Answer: B

Rationale: The axon conducts the nerve impulse away from the neuron's cell body.

Correct Answer: C

Rationale: Carbohydrates lack carboxyl groups (typical of fatty acids); they are sugars with C, H, and O, linked by dehydration.