A species facing extremely high risk of extinction in the immediate future is called:

1. Vulnerable

2. Endemic

3. Critically Endangered

4. Extinct

The zone of atmosphere in which the ozone layer is present is called:

1. Ionosphere

2. Mesosphere

3. Stratosphere

4. Troposphere

The organisation which publishes the Red List of species is:

Select the Taxon mentioned that represents both marine and freshwater species:

Which one of the following living organisms completely lacks a cell wall?

1. Cyanobacteria

2. Sea- fan (Gorgonia)

3. Saccharomyces

4. Coelenterata algae

Planaria possess a high capacity of:

1. metamorphosis

2. regeneration

3. alternation of generation

4. bioluminescence

A marine cartilaginous fish that can produce electric current is:

Choose the correctly matched pair:

1. Tendon-Specialized connective tissue

2. Adipose tissue-Dense connective tissue

3. Areolar tissue- Loose connective tissue

4. Cartilage- Loose connective tissue

Choose the correctly matched pair:

1. Inner lining of salivary ducts- Ciliated epithelium

2. Moist surface of buccal cavity- Glandular epithelium

3. Tubular parts of nephrons- Cuboidal epithelium

4. Inner surface of bronchioles- Squamous epithelium

In the 'S' phase of the cell cycle: