Biology Questions Answers

• 15. Who invented Vitamin ?

  1. F.G. Hopkins
  2. Mc. Collum
  3. Holst
  4. Ronald Ross

  Answer :

  Option A

  Explanation:

  Mc. Collum invented Vitamin A, Vitamin B and Vitamin D
  
  Holst invented Vitamin C
  
  Ronald Ross invented Malaria parasite and treatment.

• 16. Monotremes are unique mammals because they

  1. lay eggs
  2. secret milk in a pouch
  3. give birth to live young
  4. posses hair

  Answer :

  Option A

• 17. The quantity of human blood is what percent of total weight ?

  1. 5%
  2. 6%
  3. 7%
  4. 8%

  Answer :

  Option C

• 18. Milk is poor source of

  1. Calcium
  2. Iron
  3. Copper
  4. Sodium

  Answer :

  Option B

• 19. What is movement of cell against concentration gradient is called

  1. osmosis
  2. active transport
  3. diffusion
  4. passive transport

  Answer :

  Option B

• 20. Breeding and management of bees is known as :

  1. Sericulture
  2. Apiculture
  3. Silviculture
  4. Pisciculture

  Answer :

  Option B

• 21. The deficiency of which of the following leads to dental caries ?
  

  1. Iron
  2. Fluorine
  3. Copper
  4. Zinc

  Answer :

  Option B