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Define external fertilization....

Define external fertilization.

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Define external fertilisation. Mention its disadvantages.

Mention any two conditions that enhance the chances of syngamy in organisms exhibiting external fertilization.

Differentiate between internal fertilization and external fertilization.

Write any two differences between external fertilization and internal fertilization.

Endoskeleton of calcareous ossicles, external fertilization, adults shows radial symmetry, development indirect. The above given feature are true for :-

(A): In majority of algae, fishes and amphibians external fertilization takes place. (R): These organisms reproduce in water.

MBD -HARYANA BOARD-REPRODUCTION IN ORGANISMS-EXERCISE
  1. Define external fertilization.

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  2. In Rhizopus, asexual reproduction takes place byformation.

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  3. Fill in the blanks with suitable words: Pseudomycelium is formed in .....

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  4. in Penicillium are formed on conidiophores.

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  5. In sweet potato, vegetative propagation takes place through.

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  6. In Bryophyllum vegetative propagation takes place through.

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  7. Fill in the blanks with suitable words: Development of fruit without f...

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  8. State True or False : The ovary ripens to form fruit.

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  9. State True or False : Ginger is grown by bulb.

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  10. State True or False : Zaminkand is vegetatively propagated by Corm.

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  11. State True or False : A Cleistogamous flower remains closed to help se...

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  12. State True or False : A clone is a group of individuals obtained throu...

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  13. Repair of damaged tissue or redevelopment of lost part.

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  14. The zygotic nucleus.

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  15. Female part is an ovary.

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  16. Vegetative type of reproduction means:

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  17. Micropropagation is based on:

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  18. Inarching is improved method of grafting as here:

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  19. The entry of pollen tube into embryo sac through the integument is ter...

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  20. The unisexual flowers are found in:

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  21. In monocots grafting is impossible because they lack:

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