Question 9 :
An animal on the verge of extinction in India is the

Question 10 :
According to a pyramid of production, approximately what percent of the energy at a trophic level is transferred to the next trophic level?<br>

Question 14 :
The allotrope of this element is the primary absorber of UV solar radiation in Earth's atmosphere. What element is this?

Question 16 :
Identify A in the given food chain. Plant,&#160; Insect,&#160; Frog, A, Eagle.

Question 20 :
Substances that are broken down by biological processes are said to be<br/>

Question 23 :
Ozone layer is harmful when present in ____ and protects life when present in____ .<br/>

Question 28 :
In the following groups of materials, which group contains only non-biodegradable items?<br/>(i) Wood, paper, leather<br/>(ii) Polythene, detergent, PVC<br/>(iii) Plastic, detergent, grass<br/>(iv) Plastic, bakelite, DDT

Question 30 :
An important product in the ozone depletion by chlorofluoro carbons is:

Question 35 :
In which of the following zones of atmosphere is ozone layer present?<br/>

Question 36 :
Which of the following statements is not correct regarding biomagnification?<br/>(i) Mercury accumulated by an organism cannot be metabolised.<br/>(ii) In the process of biomagnification, concentration of DDT is increased at successive trophic levels.<br/>(iii) Accumulation of cadmium can cause thinning of eggshells in birds.<br/>(iv) DDT accumulation is a major cause of a reduced population of fish-eating birds.<br/>(v) Biomagnification occurs only in the aquatic food chain

Question 39 :
Biomedical waste (management and handling) rules, wasestablished in the year _____

Question 40 :
Increase in the concentration of the toxicant at successive trophic levels is known as