(a) (i) Name four similarities found in plant and animal cells (ii) In a tabular form list four different cells found in man and give a function for each of...
Question 1 Report
(a) (i) Name four similarities found in plant and animal cells
(ii) In a tabular form list four different cells found in man and give a function for each of the cells.
(b) (i) Name the two types of cell divisions.
(ii) Give two examples each of life processes involved in each type of the cell division.
(c) Name the two types of reproduction usually associated with organisms.
Answer Details
(a)(i) Four similarities in plant and animal cells
- Both possess a cell membrane (plasma membrane).
- Both have cytoplasm.
- Both have a nucleus.
- Both have mitochondria.
- Both have ribosomes and an endoplasmic reticulum.
(Any four.)
(a)(ii) Four cells found in man and their functions
| Cell | Function |
|---|---|
| Red blood cell (erythrocyte) | Transports oxygen (and some carbon dioxide) in the blood |
| White blood cell (leucocyte) | Defends the body against disease by destroying germs / producing antibodies |
| Nerve cell (neurone) | Transmits nerve impulses (messages) round the body |
| Sperm cell | Male reproductive cell that fertilises the egg |
| Muscle cell | Contracts and relaxes to bring about movement |
(Any four.)
(b)(i) Two types of cell division
Mitosis and meiosis.
(b)(ii) Two examples of life processes involving each
- Mitosis: growth (increase in body size); repair of damaged tissues / healing of wounds; asexual reproduction.
- Meiosis: formation of gametes (sperms and eggs / pollen grains and ovules); sexual reproduction (ensuring the constant chromosome number is restored at fertilization).
(c) Two types of reproduction in organisms
Asexual reproduction and sexual reproduction.
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