Removal or degradation of environmental pollutants or toxic materials by living organisms is called_____.

1. 1. Integrated disease management
   2. Bioremediation
   3. Hydroponic culture technique
   4. Pasteurization

The word which E-Chatton suggested for bacteria and blue green algae was_____.

1. 1. Pro-cariotique
   2. Autotrophs
   3. Heterotrophs
   4. Eu-cariotique

Unlike other algae, diatoms do not readily decay due to_____.

1. 1. Nonliving cells
   2. Mucilaginous wall
   3. Water proof cell
   4. Siliceous wall

Nervous system of nematods consists of?

1. 1. Dorsal nerve cord
   2. Ventral nerve cord
   3. Lateral nerve cord
   4. All of these

In all plants the major sites of phosynthesis are_____.

1. 1. Stems
   2. Leaves respire and utilize O2 and release CO2.
   3. Roots
   4. Branches

Which of the following is an example of the living member of Psilopsida_____.

1. 1. Rhynia
   2. Psilotum
   3. Psilophyton
   4. Cooksonia

Production of pyrogens is a _____phenomenon?

1. 1. Destructive
   2. Protective
   3. Constructive
   4. Aggressive

Carrot is a source of_____.

1. 1. Vitamin B
   2. Vitamin A
   3. Vitamin C
   4. Vitamin D

So far over_____number of species of animals are known?

1. 1. 2 Million
   2. 3 Million
   3. 1 Million
   4. 2 Million

Which disease can be controlled by vaccination?

1. 1. Cancer
   2. Diabetes
   3. Measles
   4. Heart attack