AP BIOLOGY

Detailed explanation-1: -The correct answer is imbibants. Colloidal systems – such as gum, starch, proteins, cellulose, agar, and gelatine – when placed in water, will absorb a large volume of water and swell up. These substances are called imbibants.

Detailed explanation-2: -Part 1: Imbibition. The process involving absorption of water by a substance is referred to as imbibition. Swelling of a piece of wood when placed in water is due to imbibition.

Detailed explanation-3: -This special type of diffusion is known as imbibition. Water potential gradient between the absorbent and the liquid imbibed is necessary for imbibition. Due to imbibition, seeds swell when submerged in water.

Detailed explanation-4: -Imbibition is the adsorption of water by the solid and dry surface. Living tissues are not required for imbibition. For example, seed germination and swelling of wood on exposure to moisture. If a wooden block is placed in water it will imbibe water and swell.

Detailed explanation-5: -Dry seeds when immersed in the water get swelled up due to imbibition. It is a process in which water is absorbed by solid particles like phycocolloids without forming a solution.