HARD
10th CBSE
IMPORTANT
Earn 100

Answer the following question based on the information given below: 
Shown here is the extent to which two different animals can see in either direction without turning their heads. In animal 1, the eyes are placed towards the front of the head, and animal 2; the eyes are placed on either side of the head. 
Since the placement of eyes in the two animals is different, their vision is also slightly different. 

Question Image
In the figure above, the grey part represents the part that both eyes can see at a time, while the white part represents those parts that can be seen only by one eye at a time. 
Animal 2 can see a broader area at any time compared to animal 1. Animal 1 can distinguish depth better compared to animal 2. 
Based on this, which of the following two animals is most likely to be a Predator and why?

Important Questions on Our Environment

HARD
10th CBSE
IMPORTANT

Answer the following question based on the information given below: 
Shown here is the extent to which two different animals can see in either direction without turning their heads. In animal 1, the eyes are placed towards the front of the head, and animal 2; the eyes are placed on either side of the head. 
Since the placement of eyes in the two animals is different, their vision is also slightly different. 

Question Image
In the figure above, the grey part represents the part that both eyes can see at a time, while the white part represents those parts that can be seen only by one eye at a time. 
Animal 2 can see a broader area at any time compared to animal 1. Animal 1 can distinguish depth better compared to animal 2. 

Observe the following food web. Classify the animals into two groups - one that would need to have a vision as animal 1 and another as animal 2 in the diagram above:

Question Image

HARD
10th CBSE
IMPORTANT

Arrange the four objects given above according to the time they take to get biodegraded(LEAST time TO MOST time).

Bone Metal can Paper sheet Plastic bottle
MEDIUM
10th CBSE
IMPORTANT
Mention two ways by which energy is lost from the trophic levels in the ecosystem.
HARD
10th CBSE
IMPORTANT
A lot of harmful chemicals enter our body through different sources like food. Since human beings are at top of the food chain/ trophic structure, maximum concentration of these chemicals is found in human beings. What is this phenomenon known as?
MEDIUM
10th CBSE
IMPORTANT
Lions have no known natural predators. 
Based on energy transfer in a food chain, what could be the most likely reason for the above statement? 
MEDIUM
10th CBSE
IMPORTANT
Which of the following belonging to a food chain is likely to have maximum concentration of harmful chemicals in its body?
MEDIUM
10th CBSE
IMPORTANT
A food chain comprises of a cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be:
MEDIUM
10th CBSE
IMPORTANT
In aquatic food-chains, the microscopic organisms involved are