The vitamin that acts as an antioxidant and protects cell membranes from damage is: MCQ with Answer and Explanation

Explanation:
A synapse is a junction between two neurons (or neuron and effector) where neurotransmitters are released to propagate the signal.

Explanation:
Pollination is indeed pollen transfer. Double fertilization produces triploid endosperm; pollen tube enters via micropyle; ovary becomes fruit, ovule becomes seed.

Explanation:
Scoliodon is a cartilaginous fish (Chondrichthyes), possessing a cartilaginous endoskeleton, placoid scales, and ventral mouth. Rohu and Catla are bony fishes (Osteichthyes). Hippocampus is also a bony fish. Chondrichthyes include sharks, rays, and skates. They lack an air bladder and have to swim constantly to avoid sinking.