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.