Plants: Structure and Function — Science STD 7 — Question

Sketch and describe ¡n your on words, the plant cell and animal cell.

Describe natural resources with reference to the following
Mineral resources

Read the paragraph and answer the following questions:

I am a penguin. I live in polar region covered by snow. My abdomen is white. My skin is thick with a layer of fat underneath. My body is spindle-shaped. My wings are small. My toes are webbed. We live in flocks.

1.Why is my skin white and thick and why is there a thick layer of fat underneath?
2.Why do we live in flocks sticking close to each other?
3.Which geographical region do I inhabit? Why?
4.Which adaptations should you have to enable you to live permanently in the polar region? Why?

What is the difference between us:
Plant cell and animal cell.

Observe the diagrams and answer the questions given below:

1.Name the methods shown.
2.Give 2 points of difference between the methods.

Describe natural resources with reference to the following
Forest resources

Explain the uses and the harmful effects of, micro-organisms.

Write short notes on:
(1) Distillation (2) Sublimation (3) Magnetic separation (4) Sedimentation (5) Filtration (6) Evaporation

Describe natural resources with reference to the following
Ocean resources

Draw a neat labelled diagram of fish and answer the following questions.

1.Why do fish have a body tapering towards both its ends?
2.Why do Fish have transparent eyelids.
3.How are they able to float?