Biodegradation

Q. Which of the following is not a biodegradable waste?

1. Human and animal waste
2. Electronic devices
3. Plant products
4. Paper

Q. If a material is biodegradable, it means that it can be consumed by microorganisms.

1. True
2. False

Q. Biodegradable wastes can be employed to produce

1. both of these
2. manure
3. none of these
4. biogas

Q. Microorganisms do not help in biodegradation.

1. True
2. False

Q. Organisms responsible for biodegradation play a role of decomposers in an ecosystem.

1. True
2. False

Q. Biodegradation is carried out by bacteria and some fungi.

1. False
2. True

Q. Nowadays, the usage of bioplastics is promoted more than ordinary plastics because:

1. All bioplastics are biodegradable or compostable.
2. Bioplastics break down under the influence of natural elements.
3. Compostable products can be turned into compost within six months.
4. They are more aesthetically pleasing.

Q. The increase in concentration of a chemical in organisms as we move from lower to higher trophic levels is called .

1. eutrophication
2. biomagnification
3. BOD

Q.

Write a short note on the recycle method in the 3 $R^{{}^{\prime }}$s [2 MARKS]

Q.

What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?