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The aphotic zone means that light is

A. always present

B. present during day

C. always absent

D. present during night

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  1. The pathogenic organisms of an infected person are destroyed by the action of
  2. The protoplasm of a child is exactly the same as that of its
  3. Plants growing in saline marsh habitats are called
  4. The bacteria that gets into our body is consumed by
  5. Leafy trees help in preventing
  6. Loss of blood is minimized due to blood
  7. Pulse rate is measured in the wrist by observing the jerks of blood In the
  8. Whale reproduces by
  9. The country's first 'brain bank' that can store up to 300 human brains has been opened at
  10. The disease Goitre is caused in persons who do not have in their diet sufficient
  11. The cavities of the brain are filled with
  12. The olfactory area is concerned with
  13. When the earth was formed it had an atmosphere with
  14. The stones formed in human kidney consist mostly of
  15. The development of new organs is termed
  16. Fishes send out their nitrogenous waste as
  17. The hypoglossal nerves are the pairs of the spinal nerves
  18. Organisms that depend only on raw plant products are said to be
  19. Injection of insulin causes
  20. The cell theory of Schleiden and Schwann states that
  21. Who discovered the electron microscope?
  22. The rate of heartbeat is accelerated by the hormone
  23. Geotropism is reaction of plants to the stimulus of
  24. Man is warm-blooded, frog is cold-blooded, Which one of the following is cold-blooded?
  25. Human blood is oxygenated and purified in the
  26. Carbohydrates are mainly needed for
  27. Vitamin D is manufactured in a healthy human being by the action of _______ on the skin and absorbed…
  28. The larva of the housefly is called
  29. What are oncogenes?
  30. Nephantis is popularly called