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Name the cap which covers the gills in f...

Name the cap which covers the gills in fishes:

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Operculum
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An object falls freely from rest. It covers the same distance in last second. Which is covered in first 3 seconds, then in .............., it will reach the ground.

A fair die is thrown twice. Let (a, b) denote the outcome in which the first throw shows 'a' and the second throw shows 'b' . Let A and B be the following events : A={(a,b): a is even}, B={(a,b): b is even} Statement-1: If C={(a,b): a+b is odd}, then P(A cap B cap C)=(1)/(8) Statement-2: If D={(a,b): a+b is even}, then P(A cap B cap D// A cup B)=(1)/(3)

ALLEN -ANIMAL KINGDOM-Exercise
  1. The animals which don't have the capacity of regulate their body tempe...

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  2. How many pairs of gills are present in bony fishes?

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  3. Name the cap which covers the gills in fishes:

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  4. Which structure represents ear in amphibians and reptiles?

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  5. In which class of vertebrates 3-chambered heart is found?

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  6. The common chamber for alimentary canal, urinary, bladder and reproduc...

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  7. Which class of vertebrates possesses dry and cornified skin with epide...

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  8. In which reptiles 4-chambered heart is present?

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  9. Snakes and lizards shed off their scales often. This phenomenon is cal...

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  10. The presence of feathers is characteristic of which class?

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  11. The bones of birds are long and hollow with air cavities. These types ...

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  12. name of the additional chambers found in the digestive tract of birds:

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  13. name the respiratory organs in birds and mammals:

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  14. Presence of mammary gland is the unique character of which class?

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  15. Name an oviparous organism with presence of mammary glands:

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  16. Name the phyla which have radial symmetry:

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  17. A cavity in which mesoderm is found in scattered form is called as:

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  18. Match the column

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  19. Identify the following A,B,C and D in given figure:

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  20. Identify the following symmetries shown in the figures A and B:

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