Question

In which of the following events, lysosomal activity is absent?

• A. Entry of the sperm cell into the Egg cell
• B. Autolysis of cells in tadpole
• C. Renewal of cells and organelles
• D. Movement of the sperm cell toward the egg cell

Answer 1

The correct option is D Movement of the sperm cell toward the egg cell

Lysosomes are organelles that contain digestive enzymes. They digest excess or worn-out organelles. During fertilisation, sperms head secrete some lysosomal enzymes which help in the penetration of sperm into the vitelline layer of the ovum. Lysosome’s role has been discovered in the metamorphosis of the frog. The disappearance of the tail from tadpole larva of frog is due to lysosomal activity. But the movement of the sperm cell towards an egg cell is aided by another organelle mitochondria.