Photosynthesis — Biology STD 10 — Question

The tissue concerned with upward conduction of water in plants.

Define the terms Population density.

One of the following sets of body parts or substances or processed, pick out the one item which overall includes the remaining foir.
Skin, liver, lungs, kidneys, excretion.

Give Reasons for the following.
On sprinkling common salt on grass growing in a lawn, the grass is killed.

“A higher rate of transpiration is recorded on a windy day rather than on a calm day.” Explain.

Name the opening on the stem through which transpiration occurs.

Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer

What factors govern the growth of population.

What is blood pressure? How is it measured?

Give the special function of the following:
Gonadotrophic hormone