General Science Biology Current Affairs Questions and Answers - Updated 2019

  1. Which part of the human brain is more developed than other mammals?
    A. Cerebellum
    B. Cerebrum
    C. Sensory lobes
    D. None of these
  2. B. Cerebrum
    Cerebrum of the human brain is more developed than other mammals.
  3. What would happen to the person if cerebellum of his brain is damaged?
    A. He will lose his memory power
    B. He will not be able to swallow food properly
    C. He will be unable to coordinate and stand properly
    D. He will lose his powers of vision and hearing
  4. C. He will be unable to coordinate and stand properly
    If a person's cerebellum is damaged, then he will not be able to coordinate and stand up properly.
  5. Which of the following is not a plant hormone?
    A. Auxin
    B. Gibberellins
    C. Cytokinins
    D. Adrenaline
  6. D. Adrenaline
    Adrenaline is not a plant hormone. Adrenaline, also known as epinephrine, is a hormone, neurotransmitter. It is found in many animals and some single cell organisms.
  7. Corpus callosum is present in:
    A. Medulla Oblongata
    B. Pons
    C. Cerebrum
    D. Cerebellum
  8. C. Cerebrum
    Corpus Callosum is present in the Cerebrum. Corpus colosum is a bridge between the left and right sides of the brain.
  9. The seat of intelligence, thinking and judgment in human brain is:
    A. Medulla Oblongata
    B. Mid Brain
    C. Cerebrum
    D. Cerebellum
  10. C. Cerebrum
    The seat of intellect, thinking and judgment in the human brain is the Cerebrum.
  11. Ordinary table salt is sodium chloride. What is baking soda?
    A. Potassium Chloride
    B. Potassium Carbonate
    C. Potassium Hydroxide
    D. Sodium Bicarbonate
  12. D. Sodium Bicarbonate
    Sodium Bicarbonate, commonly known as baking soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation and a bicarbonate anion. Sodium bicarbonate is a white solid that is crystalline, but often appears as a fine powder.
  13. What is common to whale, seal and shark?
    A. Homoiothermy
    B. Seasonal Migration
    C. Thick Subcutaneous Fat
    D. Convergent Evolution
  14. D. Convergent Evolution
    Convergent Evolution (independent evolution of similar features in species of different lineages) is common to whale, seal and shark.

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  15. Movement of cell against concentration gradient is called:
    A. Osmosis
    B. Active Transport
    C. Diffusion
    D. Passive Transport
  16. B. Active Transport
    Active transport this is the only transport method that can move species against their concentration gradient (from low to high concentration). Facilitated diffusion only moves species down their concentration gradient from high to low concentration.
  17. The concept of chemical evolution is based on:
    A. Possible origin of life by combination of chemicals
    B. Crystallization of chemicals under suitable environmental conditions
    C. Interaction of water, air and clay under
    D. Effect of solar radiation of chemicals
  18. A. Possible origin of life by combination of chemicals
    The concept of chemical evolution is based on the possible origin of life by combination of chemicals.
  19. Most highly intelligent mammals are:
    A. Whales
    B. Dolphins
    C. Elephants
    D. Kangaroos
  20. B. Dolphins
    Most highly intelligent mammals among the four is Dolphins.
  21. Pollination is best defined as:
    A. Transfer of pollen from anther to stigma of the same plant.
    B. Germination of pollen grains
    C. Growth of pollen tube in ovule
    D. Visiting flowers by insects
  22. A. Transfer of pollen from anther to stigma
    Pollination is best defined as the transfer of pollen from anther to stigma of the same plant.
  23. Most fish do not sink in water because of the presence of:
    I. swim bladder
    II. air bladder
    III. air sacs
    IV. air in spongy bones
    A. I and II are correct
    B. II and III are correct
    C. III and IV are correct
    D. I II III and IV are correct
  24. A. I and II are correct
    Most fish do not sink in water because of the presence of swim bladder and air bladder.
  25. Plants that grow in saline water are called:
    A. Halophytes
    B. Hydrophytes
    C. Mesophytes
    D. Thallophytes
  26. A. Halophytes
    Plants that grow in saline water are called Halophytes.
  27. Nucleus, the genetic material containing rounded body in each cell was first discovered in 1831 by:
    A. Robert Hooke
    B. Robert Brown
    C. Rudolf Virchow
    D. Theodore Schwann
  28. B. Robert Brown
    Nucleus, the genetic material containing rounded body in each cell was first discovered in 1831 by Robert Brown.
  29. Most of the red blue and purple colours of plants are due to a pigment called:
    A. Anthocyanin
    B. Carotene
    C. Chlorophyll
    D. Xanthophylls
  30. A. Anthocyanin
    Anthocyanin - A blue violet or red flavonoid pigment found in plants.