The Nervous System and Sense Organs — Biology STD 10 — Question

Name the following:
The process by which leucocytes engulf and destroy bacteria.

Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.
Explain briefly the role of the following structures in this process is Cuticle.

Name the Following :
Term used for a life form that has remained unchanged for a hundred millions of years.

Explain the Term: Endosmosis

Name two essential structures which take part in fertilization.

Name the Following :
Name the metallic element present in red blood cells.

The process by which molecules distribute themselves evenly within the space they occupy.

Name the Following :
The only gaseous hormone in the plant system.

How will you find out the infant mortality rate?

Give Reason:

The spinal cord and brain are called the central nervous system.