How do organisms reproduce Worksheet-13
Subjective questions:
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What is the outcome of fertilisation? What is fertilisation known as?
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Gonads have dual functions. What are their secretions?
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State the exact functions of the fallopian tube.
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Why is the female reproductive system more complex than the male reproductive system?
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Why is it said that' sexual reproduction promotes, diversity of characters in the offsprings'?
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Draw a labelled diagram to show spore formation in Rhizopus.
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What is vegetative propagation? Classify it along with examples.
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How are these ornamental plants propagated? Mention the name of the method:
(i) Jasmine (ii) Rose (iii) Bougainvillea (iv) Hibiscus
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What is the difference between the two asexual methods of reproduction - fission and fragmentation?
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How does copper-T prevent pregnancy?
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What are the different parts of stamen and pistil. Show it diagrammatically.
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Where is ovary located in human female body? What is its role?
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How do oral contraceptives work? What is their role?
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Distinguish between primary sex organ and secondary sex organ.
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Why is the number of sperms produced always more than the number of eggs produced?
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What are the functions of a flower?
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Name the method by which Amoeba reproduces. Is this method sexual or asexual?
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Write a short note on HIV/AIDS.
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What is the importance of DNA copying in reproduction?
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Why is variation beneficial to the species, but not necessarily for the individual?
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How will an organism be benefitted if it reproduces through spores?
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Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
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What is the role of the seminal vesicles and the prostate gland?
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What are the changes seen in girls at the time of puberty?
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What are the functions performed by the testis in human beings?
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Why does menstruation occur?
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How does reproduction help in providing stability to populations of species?
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(i) What is fertilisation? Distinguish between external fertilisation and internal fertilisation.
(ii) What is the site of fertilisation in human beings?
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Define the terms unisexual and bisexual giving one example of each.
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Explain double fertilisation in plants.