The most important fishing grounds of the world are found in the regions where

With reference to the food chains in ecosystems, which of the following kinds of organism is / are known as decomposer organism / organisms?

1. Virus 2. Fungi 3. Bacteria

Select the correct answer using the codes given below.

Consider the following minerals:

1. Calcium

2. Iron

3. Sodium

Which of the minerals given above is/are required by human body for the concentration of muscles?

Which one of the following terms describes not only the physical spaceoccupied by an organism, but also its functional role in the community of organisms?

Which of the following diseases can be transmitted from one person to another through tattooing?

1. Chikungunya 2. Hepatitis B 3. HIV-AIDS

Select the correct answer using the codes given below.

Consider the following organisms:

1. Agaricus 2. Nostoc 3. spirogyra

Which of the above is/are used as biofertilizer/biofertilizers?