GRADE 9 IGCSE: PORTFOLIO RESEARCH

1. Define Inheritance

2. Define terms such as chromosomes, genes, allele.

3. Define the terms haploid and diploid nucleus.

4. Formation of boys and girls in reproduction

5. State the role or job of mitosis in humans

6. Define the terms genotype, phenotype, homozygous, heterozygous,

dominant and recessive.

7. What is a mono-hybrid cross? Show an example.

8. What is variation, discontinued variation and continues variation.

9. Inheritance of Blood groups in humans.

10. Define mutation.

11. Outline the effects of ionizing radiation on

the rate of mutation

12. Describe the role of artificial selection in the production of varieties of animals and plants with increased economic importance.

13. Define natural selection as the greater chance of passing on of genes by the best adapted organisms

14. Explain the importance of natural selection as a possible mechanism for evolution.

15. Describe the development of strains of antibiotic resistant bacteria as an example of natural selection.

GRADE 9 1GCSE: PORTFOLIO RESEARCH

RESEARCH ON THE FOLLOWING:

1. Mitosis and Meiosis. Compare and differentiate.

2. The stages or phases of Mitosis and Meiosis.

3. Diagram or chart of the stages of Mitosis and Meiosis.

4. Agriculturists use plant hormones for the cutting process

5. Plant asexual reproduction

A. Cutting

B. Tissue culture

C. Stem Tuber

D. Budding

6. Allergic reactions from pollens.

7. Test tube babies

8. AIDS information, signs and symptoms and its development for cure.

GRADE 9 1GCSE: HOMEWORK

Homework: This will be submitted next week printed in an A4 paper.

Note: Prepare for a short quiz about this homework.
Research on the following:
1. Superior ovary and inferior ovary of a flower. Show a diagram.
2. The different types of flowers, such as bisexual and unisexual.

3. Flower symmetry.

4. Investigate and state the environmental condition that affects the germination of seeds: water, oxygen and suitable temperature.

5. 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.

6. State that seed and fruit dispersal by wind and by animals provides a means of colonising new areas.

7. Describe, using named examples, seed and fruit dispersal by wind and by animals.

8. Search for Cleistogamous flowers.

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.

GRADE 10: PREPARATION

ALL GRADE 10 WILL PREPARE FOR THE PRESENTATION ON GENETICS

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

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?