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Snakes and lizards shed off their scales...

Snakes and lizards shed off their scales often. This phenomenon is called as:

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Snakes and lizards shed their scales as ......

Deciduous plants shed their leaves during hot summer or in autumn. This process of shedding of leaves is called abscission. Apart from physiological changes, what anatomical mechanism is involved in the abscission of leaves ?

When a freshly collected spirogyra filament is kept in a 10% potassium nitrate solution, it is observed that the protoplasm shrinks in size (a) What is this phenomenon called ? (b) What will happen if the filament is replaced in distilled water ?

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ALLEN -ANIMAL KINGDOM-Exercise
  1. Which structure represents ear in amphibians and reptiles?

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

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

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

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

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

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

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

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

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  10. name the respiratory organs in birds and mammals:

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

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

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  13. Name the phyla which have radial symmetry:

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

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  15. Match the column

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

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

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  18. Identify the following coelom shown in the diagrams A, B and C

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  19. Identify the following body forms shown in the figure:

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  20. The given structure is found in phylum (a) and helps in (b)

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