The term used to refer to the transfer of pollen from the stamen of one flower to the carpel of another flower of the same species is…………. (b) The cells involved in sexual reproduction are called
Fill in the following blanks with suitable words:
(a) The term used to refer to the transfer of pollen from the stamen of one flower to the carpel of another flower of the same species is………….
(b) The cells involved in sexual reproduction are called……………
(c) Fusion of gametes gives rise to a single cell called …………..
(d) The process of fusion of gametes is called…………
(e) A multicellular animal starts its life from a……….. through sexual reproduction.
(f) The union of a sperm nucleus with an egg nucleus is known as…………… and results in a……………. egg.
(g) The menstrual cycle is controlled by……………..
(a) Cross pollination
(b) Gametes.
(c) Zygote.
(d) Fertilisation
(e) Single cell (zygote).
(f) Fertilisation; fertilised.
(g) Hormones.
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What is ovulation? How often does it happen in human females ? (b) Where does fertilisation take place in human females? (c) Explain why, fertilisation is possible if mating takes place during the middle of menstrual cycle.
4 years ago
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What changes are seen in girls at the time of puberty? (b) Name the organs which produce ova (or egg cells) in human females. (c) Draw a labelled diagram of the human female reproductive system.
4 years ago
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What changes are seen in boys at the time of puberty? (b) Name the organs which produce sperms in human males. (c) Draw a labelled diagram of the human male reproductive system.
4 years ago
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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?
4 years ago
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What is meant by ‘unisexual flowers’ and ‘bisexual flowers’? Give two examples of each. (b) What is pollination? How does pollination occur?
4 years ago
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