Question
Briefly describe the three essential basic parts of a cell
1. Cell membrane: It is a very thin, delicate and flexible membrane which surrounds each cell. It is also called plasma membrane. It consists of fine pores which allow only certain molecules to pass through it and prohibit the others and therefore, due to its function, also called selectively permeable membrane.
2. Cytoplasm: This is the living portion of the cell which is a semi-liquid, translucent and colourless liquid. It is the portion of the cell where major functions of the cell are carried out through various finer parts of the cell. The finer structures which are contained in this are called the cell organelles.
3. Nucleus: The small spherical dark coloured body usually located in the centre of the cell. It is the most important part of the cell which regulates and co-ordinates various life processes. Its major role is during cell division. It contains hereditary factors called the genes.
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| Definition | Terms |
| 1. Parts of the flower that produces pollen grains | a. petiole |
| 2. Green leaf-like structure protecting the inner parts of flower | b. anther |
| 3. Root system where side roots develop from a main primary root | c. ovules |
| 4. Fusion of the male reproductive cell with the egg cell | d. calyx |
| 5. Parts of a flower that develops into seeds | e. tap root |
| 6. Points on the stem at which leaves arise | f. internodes |
| 7. Ripened ovules | g. fertilization |
| h. seeds | |
| i. nodes |