Transpiration — Biology STD 10 — Question

Ethylene is used for

What will happen if the spleen of a man is removed?

Assertion (A): Active transport does not require energy for the absorption of minerals by roots.
Reason (R): Active transport involves the movement of minerals against their concentration gradient.

A colour blind woman marries a normal man, in the progeny _________

During ripening of fruits, ethylene:

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.
(iv) Erythrocytes contain:

Growth rate of population is the difference between the birth rate and ____________.

Which of the following is an example of Lamarckism in action?

Birth rate is the number of live births per thousand persons in