1.
Define the following terms:

Food chain

High yielding plant varieties

Demographic transition

Community health

Renewable sources of energy


Fill in the blanks

In those parts of India where rains are heavy,three crops of can be grown in a year.

In freshwater ecosystem the open water zone up to which the sunlight penetrates is called the zone.

An interaction in which one organism called the predator kills another for food is called

Elements like Zn, Mo, eu, etc., which are needed by plants in trace amounts are called

Enrichment of a water body by the input of organic waste containing nutrients, chiefly nitrates and phosphates, produces

Indicate whether the following statements are True or False

Geological soil erosion is caused by human activity..

Asthma is an allergic condition which is usually triggered by foreign substances and some emotional overlay.

Killing, hunting, shooting or capturing of any species of birds and mammals is prohibited in a wildlife sanctuary except by or under the control of the highest authority in the department responsible for management of the sanctuary.

The Wildlife (Protection) Act regulates the import, manufacture, sale, transport, distribution and use of insecticides.

Pollutants present in the soil do not affect growth of plants.

Give the answer of the following in one word/sentence only:

Weather conditions of an area which are averaged over a period of years, taking into account the weather extremes that are likely to occur.

Production of new individuals in the population.

The wanton Cutting of trees including repeated lopping and felling, removal of forest litter, browsing, grazing and trampling of seedlings in a forest.

The process by which large number of people . become permanently concentrated in small areas forming cities.

The study in which distribution of diseases or health hazards in the human population is conducted.

2. Define accelerated soil erosion. Classify the various kinds of erosions based on the agencies causing them.

3.
What are noise induced diseases? Describe the auditory and non-auditory effects of noise pollution.

Discuss the elements affecting regional carrying capacity with the help of a flow chm.

4.
of the Third World cities are really two cities." Comment briefly.

Describe the water cycle with the help of a well-labelled figure.

5.
Write briefly about the biological pest control.

Describe two broad ways of processing hazardous wastes.

6.
How does the body respond to air pollutants?

How are slums formed?

7.
Enumerate the four categories of domestic wastes, in the Indian context. Give reasons for excess generation of industrial wastes in India.

What is the role of NGOs in creating mass awareness towards the environment? 5

8.
Describe the three kinds of population histograms.

Describe the. positive and negative feedback. loop in the Population, Resource and Pollution model with the help of a diagram.

9. Write short notes on any three of the following:

Control System for Suspended Particulate Matter

Dissemination of among students though education

Primary treatment and Secondary treatment of sewage

South Asia Co-operative Environment Programme

Food adulteration and Food quality control