GRADE 9: REPRODUCTION IN PLANTS

RESEARCH ON TE FOLLOWING:

1. Identify and draw the sepals, petals, stamens, anthers, carpels, ovaries and stigmas of one, locally available, named, insect pollinated, dicotyledonous flower.

2. State the functions of the sepals, petals, anthers, stigmas and ovaries.

3. Define pollination

4. Name the agents of pollination.

5. State the environmental conditions that affect germination of seeds.

6. Compare the different structural adaptations of insect-pollinated and wind-pollinated flowers.

7. Investigate and describe the structure of a non-endospermic seed in terms of the embryo (radicle, plumule and cotyledons) and testa, protected by the fruit.

GRADE 8: RESPIRATON

Research on the following:

NOTE: A QUIZ WILL BE GIVEN ON JANUARY 10, 2011 BASED ON THIS RESEARCH.

1. What is the Heimlich maneuver?

2. Explain the phases or stage of respiration.

3. Compare the two kinds of respiration completely.

4. How does respiration in humans differ from that in a fish and an amoeba?

5. How is the structure of the air sac adapted to perform its function?

6. Explain why the rate of breathing increases in over crowded area.

7. Fermentation.

8. The carbon monoxide emitted by vehicles, which you inhale, prevents oxygen from attaching to your blood cells. Explain how this affects the respiratory system.

9. List all the name of the organs and its functions of the respiratory system.

10. The effects of smoking on a person.

11. What is second hand smoking and its effect?

12. The chemicals that are found in a cigar.