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MODES OF REPRODUCTION
Study Material
MODES OF REPRODUCTION
Very Short Answer Questions
Q1. What is the dominant phase in the life cycle of an angiosperm?
Q2. What is meant by heterospory? Mention the two types of spores developed in an angiospermic plant?
Q3. Mention the modes of reproduction in Algae and Fungi.
Q4. How do Liver worts reproduce vegetatively?
Q5. Mention any two characteristics of bacteria and yeast that enable them to reproduce asexually.
Q6. Why do we refer to offspring formed by asexual method of reproduction as clones?
Q7. Between an annual and a perennial plant, which one has a shorter Juvenile phase? Give one reason.
Q8. Rearrange the following events of sexual reproduction in the sequence in which they occur in a flowering plant: embryogenesis, fertilisation, gametogenesis, pollination.
Q9. Give reasons as to why cell division can or cannot be a type of reproduction in multicellular organisms.
Q10. Which of the following are monoecious and dioecious organisms: a) Date palm. b) Coconut. c). Chara d). Marchantia
Q11. Match the following given in column A with the vegetative propagules given in column B Column B Column A i. Bryophyllum a. Offset ii. Agave b. Eyes iii. Potato c. leaf buds iv. Water hyacinth d. Fragmentation v. Chara e. Sucker vi. Mentha f. bulbils
Q12. What do the following parts of a flower develop into after fertilisation?a) ovary b) stamens c) ovules d) calyx
Q13. Define vivipary with an example.
Q1. Distinguish between asexual and sexual reproduction. Why is vegetative reproduction also considered as a type of asexual reproduction?
Q2. Identify each part in a flowering plant and write whether it is haploid (n) or diploid (2n). (a) Ovary____________ (b) Anther_________ (c) Egg_____________(d) Pollen___________(e) Male gamete___________(f) Zygote_____________(g)Antipodal_____________
Q3. Give a brief account on the phases of the life cycle of an angiosperm plant.
Q4. Write brief account gametogenesis with examples.
Q5. Give an account of sexuality in organisms.
Q6. Fertilisation is not an obligatory event for fruit production in certain plants. Explain the statement.
Q7. List the changes observed in angiosperm flower subsequent to pollination and fertilisation.
Q8. Define (a) Juvenile phase (b) Reproductive phase
Q1. Enumerate the differences between asexual and sexual reproduction. Describe the types of asexual reproduction exhibited by unicellular organisms.
Q2. Describe the post-fertilisation changes in a flower.
Q1. Define external fertilisation. Mention its disadvantages.
Q2. Differentiate between a zoospore and a zygote.
Q3. Which is a better mode of reproduction sexual or asexual? Why?
Q4. Why is the offspring formed by asexual reproduction referred to as clone?
Q5. How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?
Q6. What is vegetative propagation? Give two suitable examples.
Q7. Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?
Q8. Explain why meiosis and gametogenesis are interlinked? always
Q9. Why is reproduction essential for organisms?