Basic Biology · Science and Technology · UPSC Civil Service

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow ?

Consider the following statements :

Statement-I : Marsupials are not naturally found in India.

Statement-II : Marsupials can thrive only in montane grasslands with no predators.

Which one of the following is correct in respect of the above statements? 

Consider the following statements :

1. Some mushrooms have medicinal properties.

2. Some mushrooms have psycho-active properties.

3. Some mushrooms have insecticidal properties.

4. Some mushrooms have bioluminescent properties.

How many of the above statements are correct? 

Consider the following statements :

1. Some microorganisms can grow in environments with temperature above the boiling point of water.

2. Some microorganisms can grow in environments with temperature below the freezing point of water.

3. Some microorganisms can grow in highly acidic environment with a pH below 3.

How many of the above statements are correct?

Consider the following :

1. Bacteria

2. Fungi

3. Virus

Which of the above can be cultured in artificial/synthetic medium?