Tissues — Science STD 9 — Question

What are biogeochemical cycles?

Distinguish between tracheids and vessels.

What is the diaphragm of the mammals?

Name the largest plant cell.

1. The cell organelle which synthesizes protein.
2. The type of plastid which stores food.

Describe the major components of air pollution.

Distinguish between the following pairs in one or two sentences for each:

Bone and cartilage.

Enumerate functions of plasma membrane.