The process of uptake of liquid droplets by the cell membrane is: MCQ with Answer and Explanation

Explanation:
Amphibians have two atria and one ventricle; mixing of blood occurs because of the single ventricle. Complete separation is achieved only in four-chambered hearts. So A true, R false.

Explanation:
Amphioxus (Branchiostoma) is a primitive chordate possessing a notochord, dorsal nerve cord, and pharyngeal slits throughout life, but lacking a vertebral column; hence it is an invertebrate chordate. Earthworm is an annelid, cockroach an arthropod, starfish an echinoderm—all non-chordates. Vertebrate chordates include fishes, amphibians, reptiles, birds, and mammals. Amphioxus is studied for evolutionary insights into vertebrate origins.

Explanation:
Vitamin A (retinal) combines with opsin to form rhodopsin in rod cells, necessary for vision in dim light. Deficiency causes night blindness. B₁ is for carbohydrate metabolism, C for collagen, D for calcium.