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Question
(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?
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Solution
(a) A flower
(b) (i) The corolla
(ii) The calyx
(c) (i) Stamen is the male reproductive organ in a flower.
(ii) Carpel is the female reproductive organ in a flower.
(d) The other name of carpel is pistil.
(e) The yellow powdery substance present in the anther of a flower are pollen grains.
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RELATED QUESTIONS
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Fill in the following blank with suitable word :
The ovary of a flower becomes ....... after fertilisation.
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(a) pollination, fertilisation, seed, embryo
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(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation
The correct sequence of reproductive stages occurring in flowering plants is ______
Put a tick mark (✓) against the correct alternative in the following statement
Reproductive whorls of a flower are:
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A flower bearing only male or female parts is known as __________ flower.
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A stamen consists of ______ and ________.
(a) Identify A, B and C in the given diagram and write their functions.
(b) Mention the role of gamete and zygote in sexually reproducing organisms.
Write the names of male and female reproductive parts of a flower.
Explain sexual reproduction in plants.
What is meant by pollination?
Give scientific reason.
Fertilization in plants is called double fertilization.
Which of the following are the chemical components of the wall of pollen tube?
Gloriosa superba exhibits ______.
Which among the following statements are true for unisexual flowers?
- They possess both stamen and pistil
- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
