The best and easy method of control of crop pests is by

A. crop rotation

B. chemicals

C. quarantine

D. biological control

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  1. Saffron is the dried ________ of the saffron plant.
  2. Pearl is secreted by the __________ of the pearl oyster.
  3. Which one of the following acts as a communication system?
  4. The human heart is
  5. Aphids are
  6. The science of improving the hereditary qualities of future generations of mankind is referred to as
  7. Bacteria utilising radiant energy to prepare food are
  8. Antisnake venom is prepared by
  9. Biologists have so far known, found and identified a large number of species in the plant and animal…
  10. Lecuminous plants are recommended for rotation of crops because they
  11. The wall of the heart is made of programmed cell death is known as
  12. The mode of nutrition in which particulate food is devoured is
  13. Organisms that live in the deep sea are mainly
  14. The theory that believes that the first living organism came from another planet is known as
  15. Diseases in plants can be caused by
  16. Most of the enzymes are
  17. Nekton are those organisms
  18. At the end of a reaction enzymes are
  19. The workers in the honey bee colony are
  20. Fishes send out their nitrogenous waste as
  21. Lactose and Rennin, the enzymes required to digest milk, disappear in the human body by the age of _______…
  22. Which among the following is a Cast growing tree?
  23. The method of inducing artificial immunity was discovered by
  24. The most accepted theory of the origin of earth is the fiery origin which was propounded by
  25. Blood is
  26. The tallest tree in the world Sequoia™ is found in
  27. Vivipary is defined as germination
  28. Athlete's Coot is the common name for the fungal disease
  29. Hypogeal germination is found in
  30. The radicle of the seeding always grows