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Why do algae and fungi shit to sexual mo...

Why do algae and fungi shit to sexual mode of reproduction just before the onset of adverse conditions?

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Organisms such as fungi and algae switch to sexaul mode of reproduction during adverse conditions because sexual reproduction brings variation into the individuals, some of which might help the individuals to adapt to the changed conditions and survive. This ensures the continuity of species.
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Assertion : Algae and fungi switch to asexual method of reproduction before the onset of adverse conditions. Reason : Asexual reproduction may introduce variations and leads to the formation of many clones.

Fill in the blanks: (1) The. .. . . A .. . . Reproduction is the common mode of reproduction in organisms that have a relatively simple organisatio 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. .... . . .

Why The Sexual Mode Of Reproduction

Sexual mode of reproduction in protozoa is

It is observed that simple organisms like algae and fungi normally reproduce asexually but before the onset of adverse conditions they shift to sexual reprodction, It is so because sexual reproduction

Why do higher oranisms shift to sexual mode of reproduction is spits of these being complex?

(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 ?

XII BOARDS PREVIOUS YEAR-XII BOARDS-Section B
  1. Mention the contribution of S.L. Miller's experiments on Origin of Lif...

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  2. Alien species are a threat to native species. Justify taking example o...

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  3. Differentiate between the two cells enclosed in a mature male gaemetop...

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  4. Work out a cross to find the genotype of a tall pea plant. Name the ty...

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  5. Why do algae and fungi shit to sexual mode of reproduction just before...

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  6. A cross was carried out between two pea plants showing the contrasting...

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  7. How does the gene 'I' control ABO blood grous in humans? Write the eff...

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  8. Write the types of sex-determination mechanisms the following crosses ...

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  9. i) Name the scientist who suggested that the genetic code should be ma...

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  10. State the disadvantage of inbreeding among cattle. How it can be overc...

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  11. Explain with the help of a suitable exmaple, the naming of a restricti...

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  12. State how has Agrobacterium tumefaciens been made a useful cloning vec...

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  13. Construct an age pyramid which reflects a stable growth status of huma...

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  14. Apart from being part of the food chain, predators play other importan...

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  15. How are 'sticky ends' formed on a DNA strand? Why are they so called ?

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  16. i)Name the scientist who suggested that the genetic code should be mad...

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  17. What is gene therapy? Name the first clinical case where it was used.

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  18. Why does the Bt toxin not kill the bacterium that produces it but kill...

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  19. Identify the following paris of Homologous or Analogous organs: i) S...

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  20. List the post-fertilization events in angiosperms.

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