Normal blood clotting requires

Correct Answer: C

Rationale: Calcium is essential for the clotting cascade (e.g., factor activation); vitamin K aids clotting factor synthesis.

Correct Answer: D

Rationale: Low Na+ reduces osmolality; excess ADH retains water, diluting Na+.

Correct Answer: B

Rationale: Lateral meristem is on the sides of long axis of the root, stem and its branches which helps in increase of girth of the stem, i.e., secondary growth.

Correct Answer: C

Rationale: Muscular tissue consists of muscle fibres which help movement and contain proteins called contractile proteins, which contract and relax.

Correct Answer: C

Rationale: The nail remains at the same position as the increase in height of the plant is due to primary growth of apical meristem, not affecting the nail's vertical position.