Tuesday, November 9, 2010

GRADE 10: PREPARATION

ALL GRADE 10 WILL PREPARE FOR THE PRESENTATION ON GENETICS

NOTE: I WILL NOT SEE ANYONE NOT DOING THEIR ASSIGNED TASKS.

Monday, November 8, 2010

GRADE 9: TRANSPORT IN PLANTS

RESEARCH ON THE FOLLOWING:
1. How are plant roots adapted to absorb water from the soil?
2. How is water lifted against gravity from the ground to the leaves?
3. How is phloem adapted for its function?
4. How is a xylem vessel adapted for its function?
5. How are the vascular tissues organized in roots?
6. How are the vascular tissues organized in stems?
7. How can we study the path water takes through a plant?
8. How does water enter a plant? detailed.
9. How do root hairs absorb ions or mineral salts?
10. How is the root hair cell adapted to its function of absorption?
11. What is root pressure?
12. What is transpiration?
13. What is capillary action?
14. How is transpiration involved in moving water against gravity?
15. What are the importance of transpiration?
16. What are the factors that affect the rate of transpiration?
17. What is a leaf boundary layer?

Thursday, November 4, 2010

GRADE 8: DIGESTION

RESEARCH ON THE FOLLOWING. COPY AND ANSWER IN A TEST PAPER.
1. What is an enzyme?
2. How does enzymes help organisms?
3. Compare the human digestive system with those of other animals. (3 kinds)
4. Identify the problems of a bad digestive system?
5. What is a dietitian?
6. How do villi aid in absorption?
7. What is Heartburn?
8. State the role of the liver in carbohydrate and fat metabolism.
9. What is the hypothalamus of the brain?
10. What is a barium meal?
11. List all the glands in the body with its function.
12. How do cows digest a cellulose diet?