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Plants absorb dissolved nitrates from soil and convert them into :

  • Free nitrogen
  • Urea
  • Proteins
  • Ammonia

Answer: Option A

Similar Questions :

1. Who invented Insulin ?

  • Christian Bernard
  • Stenach
  • Edwards and Stepto
  • Banting

Answer: Option D

Explanation:

Christian Bernard invented Heart Transplantation,

Stenach invented Sex hormone,

Edwards and Stepto invented first test tube baby.

2. Which is not an example of fungi ?

  • Mushroom
  • Mucor
  • Albugo
  • Pulp

Answer: Option D

3. Normal human blood is :

  • Neutral
  • Acidic
  • Alkaline
  • None of above

Answer: Option C

4. The richest source of vitamin D is

  • Cheese
  • Milk
  • Spinach
  • Cod liver oil

Answer: Option D

5. Who invented Vitamin ?

  • F.G. Hopkins
  • Mc. Collum
  • Holst
  • 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.

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