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Question:

What is diapedesis?

Migration of WBCs into the tissue spaces from blood capillaries.

A kind of amoeboid movement.

The process of filtration of urea in kidney.

A type of locomotion found in Hydra.

Solution:

WBCs can change their shape like Amoeba and are thus, capable of amoeboid movement. This enable them to squeeze out of blood capillaries into the tissues. This process is called as diapedesis.