Population - The increasing numbers and rising problems — Biology STD 10 — Question

If the vas deferens of a man are surgically disconnected or removed:

Complete the following sentence with appropriate Word The function of nervous system is to:

Which one of the parents is biologically responsible for sex of the child?

Red blood cells are also called as erythrocytes. Cellular component of blood, millions of which in the circulation of vertebrates give the blood its characteristic colour and carry oxygen from the lungs to the tissues. The mature human red blood cell is small, round, and biconcave; it appears dumbbell-shaped in profile. The cell is flexible and assumes a bell shape as it passes through extremely small blood vessels. It is covered with a membrane composed of lipids and proteins, lacks a nucleus, and contains hemoglobin-a red ironrich protein that binds oxygen.
Answer the following questions in context to RBC.
(ii) The iron containing respiratory pigment present in red blood cells is:

The main function of pancreas as an endocrine gland in human body

Assertion: Transpiration occurs through stomata.
Reason: Guttation is due to root pressure.

Choose the Odd One Out:

What is the name of the first human species to use stone tools?

Assertion: A special type of diffusion of water through a semi-permeable membrane is known as osmosis.
Reason: The net direction of osmosis depends only on the pressure gradient.