Question Bank

What is the primary source of energy for almost all ecosystems on Earth?

Organisms that break down dead organic matter into simpler substances are called:

A group of individuals of the same species living in a particular area is called a:

Which gas is primarily responsible for the greenhouse effect?

The place where an organism lives and gets its basic needs is its:

In a food chain consisting of Grass -> Grasshopper -> Frog -> Snake, which organism is the producer?

Which of the following is a biotic factor?

Large scale cutting of trees is known as:

Which layer of the atmosphere protects us from harmful UV rays?

Organisms that can produce their own food are called:

The interlinked network of several food chains is called:

Which of these is a renewable source of energy?

The study of interactions between organisms and their environment is:

Which animal is an example of an omnivore?

What does a pyramid of numbers represent?

World Environment Day is celebrated on:

The percentage of nitrogen gas in the Earth's atmosphere is approximately:

Which of these is a biotic component of a pond ecosystem?

Which of the following is NOT a greenhouse gas?

Animals that depend on other animals for food are called: