The Algae Noctiluca scintillans, recently seen in news, is of concern because

1) It is leading to large scale coral bleaching.

2) It produces ammonia in ocean water adversely affecting fish population.

3) It kills green blooms in the ocean.

Select the correct answer using the codes below.

Which of the following features of human body prevent entry or growth of harmful microbes in the body?

1) Skin

2) Acid in the stomach

3) Saliva

4) Eye tears

5) Mucus coating lining the respiratory tract

Select the correct answer using the codes below.

Consider the following about Deoxyribonucleic acid (DNA).

1) All living things have DNA within their cells.

2) It contains all of the information necessary to build and maintain an organism

3) An important property of DNA is that it cannot replicate itself.

4) Whenever organisms reproduce, a portion of their DNA is passed along to their offspring.

Select the correct answer using the codes below.

Consider the following statements. Stem Cells are

1) A completely differentiated cell of a multi-cellular organism

2) Found in mammals

3) Capable of giving rise to indefinitely more cells of the same type

Select the correct answer using the codes below.

Consider the following statements. Osmosis helps the plants to

1) Perform photosynthesis

2) Absorb water from the soil by roots

Which of the above is/are correct?