The cartilage that prevents food from entering the larynx during swallowing is the: MCQ with Answer and Explanation

Explanation:
Vitamin A (retinol) is crucial for maintaining healthy vision, particularly in dim light, as it is a component of the visual pigment rhodopsin. The B-complex vitamins (like B1, B2, B3, B5) act as coenzymes and are essential for various metabolic pathways, particularly the conversion of carbohydrates, fats, and proteins into usable energy. Vitamin K, not Vitamin C, is essential for the synthesis of blood clotting factors; Vitamin C is essential for collagen synthesis and immunity. Thus, statements 1 and 2 are correct.

Explanation:
The pancreas is a mixed gland (1). Alpha cells secrete glucagon, beta cells insulin. Thus, 2 and 3 are swapped and incorrect.

Explanation:
A pyramid of numbers can be inverted when a single tree (producer) supports many herbivores, or many parasites live on a single host. Energy pyramids are always upright. Biomass pyramid can be inverted in aquatic systems.