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Although sexual reproduction is a long d...

Although sexual reproduction is a long drawn, energy-intensive complex form of reproduction, many groups of organisms in kingdom- Animalia and Plantae prefer this mode of reproduction. Give atleast three resaons for this.

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**Step-by-Step Solution:** 1. **Introduction to Sexual Reproduction**: - Sexual reproduction is a process that involves the fusion of male and female gametes, resulting in offspring that are genetically distinct from their parents. 2. **Genetic Variability**: - One of the primary reasons many organisms prefer sexual reproduction is that it leads to genetic variability. The fusion of gametes from two parents creates new combinations of genes, which results in offspring with unique genetic traits. ...
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Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution ? (i) Lower groups of organisms have simpler body design. (ii) Asexual reproduction is common in lower groups. (iii) Asexual reproduction is common in higher groups of organisms. (iv) The high incidence of sexual reproduction in angiosperms and vertebrates. Choose the correct answer given below.

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution ? (i) Lower groups of organisms have simpler body design. (ii) Asexual reproduction is common in lower groups. (iii) Asexual reproduction is common in higher groups of organisms. (iv) The high incidence of sexual reproduction in angiosperms and vertebrates. Choose the correct answer given below.

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution ? (i) Lower groups of organisms have simpler body design. (ii) Asexual reproduction is common in lower groups. (iii) Asexual reproduction is common in higher groups of organisms. (iv) The high incidence of sexual reproduction in angiosperms and vertebrates. Choose the correct answer given below.

The egg apparatus lies at chalazal end Read the following statements and select the correct set of statements. a. Sexual reproduction is a slow and complex , process. b. Apomixis always occurs without gamete formation. , C. Small sized organisms always have a shorter ife span. , d. Asexual mode of reproduction can occur through formation of specialised reproductive structures

Give a comparative account of the classes of Kingdom Fungi under the following: (a) mode of nutrition, (b) mode of reproduction.

(A) Why do organisms like algae and fungi shift from asexual mode of reproduction to sexual mode ? (b) What is a juvenile phase in organisms ?

Fill in the blanks: (1) The. .. . . A .. . . Reproduction is the common mode of reproduction in organisms that have a relatively simple organisation like algae and fungi and they shift to . . . .. . B. . . Method of reproduction just before the onset of adverse conditions. (2) Asexual (Vegetative) as well as sexual modes of reproduction are exhibited by the . . ... ..c . . . . . (3) Only sexual mode of reproduction is present in most of the . .. .. . ..d. .... . . .

Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

Higher organisms have resorted to sexual reproduction in spite of its complexity, why?

Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

TRUEMEN BIOLOGY ENGLISH-REPRODUCTION-SECTION-D
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  2. (a) When and how does placenta develop in human female? (b) How is ...

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  5. (a ) Trace the development of megaspore mother cell up to the formatio...

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  6. (a ) Draw a labelled longitudinal view of an albuminous 'seed'· (b)...

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  7. Describe the post-zygotic events leading to implantation and placenta ...

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  8. Although sexual reproduction is a long drawn, energy-intensive complex...

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  9. Embryo sacs of some apomitic species appear normal but contain diploid...

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  10. Meiotic division during oogenesis is different from that in spermatoge...

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  11. Enumerate and describe any five reasons for introducing sex education ...

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  13. (a) Draw a schematic labelled diagram of a fertilised embryo sac of an...

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  14. (a) Draw a labelled diagram of sectional view of human ovary showing d...

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  15. (a) Draw a labelled diagram of the sectional view of a typical anatrop...

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  16. (a) Draw a diagrammatic sectional view of a mature anatropous ovule an...

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  17. (a) Draw a diagrammatic sectional view of the female reproductive syst...

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  18. (a) Draw a labelled schematic diagram of the transverse section of a m...

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  19. Write two differences between spermtogenesis and oogenesis

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