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Aquatic mammals have thick fat layer bel...

Aquatic mammals have thick fat layer below the skin called kerotin.

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Given below are the three statements each with two blanks. Select the option which correctly fills up the blanks in any two statements. (A) Each seminiferous tubule is lined on its inside by two types of cells called overset(i)"______" and overset(ii)"______" . (B) The seminiferous tubulus open into the overset(i)"______" through overset(ii)"______" . (C) The enlargeed end of penis called the overset(i)"______" is covered by a loose fold of skin called the overset(ii)"______" .

The characteristics given below are associated with (i) Body is covered by dry and cornified skin, epidermal scales or scutes (ii) They have no external ear (iii) Crawling, creeping habit (iv) 2 chambered heart.

MODERN PUBLICATION-ORGANISM AND ENVIRONMENT-EXERCISE
  1. Ecotone is a species of local habitat.

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  2. Community is a group of interbreeding natural population.

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  3. Mammals are cold blooded animals.

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  4. Corals are eurythermal animals.

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  5. Biome is specific place in the habitat occupied by a species.

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  6. is a group of organisms of same species living in a particular area.

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  7. Correct the statement: Sunken stomata are seen among hydrophytes.

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  8. Microscopic floating plants are called xerophytes.

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  9. Cascuta is a root parasite.

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  10. SymBOTsis is a non-mutual type of relationship where one is benefitted...

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  11. In our habitat, several populations of plants and animals when live to...

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  12. Answer in one word only. Ecological study of communities.

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  13. Fill in the blanks:When two organisms live with mutual benefit, it is ...

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  14. Mycorriza is a association of root system and algae.

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  15. Birth rate of a population is called mortality.

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  16. CAM plants open their stomata during day.

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  17. Aquatic mammals have thick fat layer below the skin called kerotin.

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  18. Kangaroo rat in North America desert fulfil the water requirement by o...

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  19. Endoparasites depend on external surface of the host. (TRUE/FALSE)

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  20. Lichen is an example of Amensalism.

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