EASY
Earn 100

At every trophic level, the amount of energy lost and retained is generally _____, respectively.

50% studentsanswered this correctly

Important Questions on Our Environment

MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
Write the types of the food chain and explain it.
EASY
Science>Biology>Our Environment>Ecosystem and its Components

Which of the following constitute is a food chain

MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
What is the role of decomposers in the ecosystem? Draw a diagram showing the flow of energy in an ecosystem.
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
In which book names of endangered plant species are published?
HARD
Science>Biology>Our Environment>Ecosystem and its Components

Attempt the following:

(i) Construct a Food Chain with the help of the organisms given below:

Hawk, Grass, Snake, Hen.

(ii) Why is it not advisable to have a six-step food chain?

(iii) If Pesticides enter the above food chain.
(a) In which organism will it be found in the maximum amount?
(b) What is this phenomenon called?

EASY
Science>Biology>Our Environment>Ecosystem and its Components
From where the grazing food chain starts?
EASY
Science>Biology>Our Environment>Ecosystem and its Components
Which of the following constitute a food chain ?
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components

A food chain in a polluted aquatic ecosystem is given. Observe it and answer the following questions.
Freshwater → Algae → Fishes → Birds.

(i) Which organisms are disturbed more due to biomagnification? Why?

(ii) This ecosystem will be destroyed gradually due to biomagnification. Why? 

EASY
Science>Biology>Our Environment>Ecosystem and its Components
Which of the following is not a natural Ecosystem?
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
What are the benefits of biogas plant to the environment?
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
Ecosystem is made up of which interacting system.
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
The study of the relationship between living things and their environment is called _____.
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
Growth of thread-like structures along with the gradual spoilage of tomato can be observed when a cut tomato is kept aside for four days. Interpret the causes for this change.
EASY
Science>Biology>Our Environment>Ecosystem and its Components
Which of the following is known as the structural and functional unit of the environment?
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
A student places a piece of cucumber, a glass piece, a banana peel and a plastic pen in a pit and closes it. What changes can be observed in these materials after a month? Give scientific reason for these changes.
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components

Give reason:

Food chains generally consist of only three or four steps.

EASY
Science>Biology>Our Environment>Ecosystem and its Components
In the alpine meadows of the Great Himalayan National Park, the practice of regular grazing by sheep was put to an end. What are the effects on the meadows due to this measure?
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components
Write the names of different trophic levels found in a food chain.
MEDIUM
Science>Biology>Our Environment>Ecosystem and its Components

a) Given below are some organisms. Arrange all of them in a food chain and show the direction of the flow of energy.

Eagle, grasshopper, frog, grass, snake.

b) Which of the organism in the above food chain has maximum amount of energy ?
c) Give an example of artificial ecosystem.

EASY
Science>Biology>Our Environment>Ecosystem and its Components
The energy enters the ecosystem through _____.