The oldest era is

A. Palaeozoic

B. Mesozoic

C. Cenozoic

D. Proterozoic

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  1. The eland having endorine as well as exocrine function is
  2. The disease Goitre is caused in persons who do not have in their diet sufficient
  3. Temperature treatment which shortens the vegetative period and hastens the flowering is called
  4. Which one of the following is caused by the expression of a recessive gene present on sex chromosome?
  5. What is 'atavism'?
  6. Food substances are substances by
  7. The metallic part in haemoglobin is
  8. The two German scientists who proposed the 'cell theory' were
  9. The hypoglossal nerves are the pairs of the spinal nerves
  10. Which one of the following was probably absent in the atmosphere at the time of origin of life?
  11. Under the immunisation programme's Govt. of India is providing vaccination to prevent some vaccine-preventable…
  12. The pathogenic organisms of an infected person are destroyed by the action of
  13. The mouth of a river opening into the sea is termed as
  14. The first sign of life made its appearance on the earth about
  15. The oldest era is
  16. Which one of the following is both an exocrine and an endocrine gland?
  17. Viruses have
  18. Fat present below the skin surface in our body acts as a barrier against
  19. The hormones are carried to target organs through the
  20. Which of the following is NOT a viral disease?
  21. Blood platelets are found in
  22. Maintenance of pregnancy is under the control of
  23. Late blight of potato is caused by
  24. Which one is a water-soluble vitamin?
  25. Phototropism means that plants react to the direction of
  26. 1 gm of carbohydrate gives energy which is about
  27. An organism eating its own species is called
  28. The primary energy for living organisms is
  29. Adaptation for flying is termed as
  30. Scrub jungle Is characterised by