(a) Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.(b) Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.(c) What is made in (i) anther, and (ii) ovary, of a flower?
(a) Stamen of a flower.
(b) Carpel of a flower.
(c) (i) Male gametes called pollen grains are made in the anther of a flower.
(ii) Female gametes called eggs are made in the ovary of a flower.
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- (a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.(b) What name is given to (i) all the petals of a flower, and (ii) all the sepals of a flower? (c) What are (i) stamen, and (ii) carpel, in a flower? (d) What is the other name of carpel of a flower? (e) What is the name of yellow powdery substance present in the anther of a flower?
- In a flower, the parts that produce male and female gametes are respectively:(a) sepal and anther (b) filament and stigma (c) anther and ovary (d) stamen and style
- The male gametes in a flower and in a human are produced respectively in:(a) stigma and ovary (b) anther and style (c) ovary and testes (d) anther and testes
- Draw a neat diagram showing fertilisation in a flower and label (a) Pollen tube, (b) Male germ cell and (c) Female germ cell, on it. Explain the process of fertilisation in a flower. What happens to the (i) ovary and(ii) ovule after fertilisation?
- Sketch the reproductive parts of a flower.
- In which part of a flower, you will find the ovary?
- (a) Draw a diagram showing germination of pollen on the stigma of a flower and mark on it the following organs/parts :(i) Pollen Grain(ii) Pollen tube(iii) Stigma(iv) Female germ cell(b) State the significance of the pollen tube.(c) Name the parts of the flower that develop after fertilization into(i) Seed(ii) Fruit
- DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage- The transfer of pollen from the another to the stigma of a flower is called pollination.If the pollen of a flower lands on the stigma of the same flower, or on the stigma of another flower of the same plant, it is called self-pollination. When the pollen of a flower lands on the stigma of another flower of a different plant of the same kind, it is called cross-pollination.In cross-pollination,(a) the pollen of a flower lands on the stigma of another flower of the same plant.(b) the pollen of a flower lands on the stigma of another flower of a different plant of the same kind.(c) both the above are correct.(d) none of these is correct.
- (a) Distinguish between cross-pollination and self-pollination. Mention the site and product of fertilization in a flower.(b) Draw labelled diagram of a pistil showing the following parts:Stigma, Style, Ovary, Female germ cell
- Draw a labelled diagram of the longitudinal section of a flower.
- What is the name of:(a) male part of a flower?(b) female part of a flower?
- What is the name of female organ of a flower(other than carpel)?
- How to Draw a Flower?
- What is the structure of a flower?
- Draw a labeled sketch of the human eye.
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