The first person to observe the bacteria, protozoa and spermatozoa under the microscope was

A. Theodore Schwann

B. Matthias Schleidon

C. Robert Hooke

D. Leuwenhoek

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  1. The involuntary muscles are controlled by the
  2. Whale reproduces by
  3. Plants growing in sunlight are called
  4. The eland having endorine as well as exocrine function is
  5. Scurvy is a disease caused by the deficiency of vitamin.
  6. The two minerals required to keep teeth and bones intact and in good condition are
  7. Which of the following diseases is considered as completely eradicated from India, as no case of the…
  8. The condition in which there is abnormal decrease of white blood corpuscles is known as
  9. Which one of the following is not an essential micronutrient for plants?
  10. Metastasis' is the process by which
  11. Who discovered the electron microscope?
  12. Which one of the following genetical disease is sex-linked?
  13. Blood is
  14. Which of the following diseases is water borne?
  15. The tear glands help us in
  16. Green plants In the sea are useful for respiration of flash because they
  17. The function of ribosomes is
  18. Saliva flows at the sight of food. This action is
  19. Blood is
  20. Eye is an organ that can be called as
  21. The thermoregulatory centre in the human brain is the
  22. The development of new organs is termed
  23. The 'father of genetics' is
  24. Late Blight' is a disease that affects the _______ crop.
  25. Organisms that live in the deep sea are mainly
  26. The cortex of human brain normally consists of
  27. AIDS is caused by the organisms which are
  28. A few infections like sore throat, whooping cough and tuberculosis are carried through the respiratory…
  29. Geotropism is reaction of plants to the stimulus of
  30. Which of these is most consistently observed in Vitamin B12 deficiency?