MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

With reference to the food chains in ecosystems, which of the following kinds of an organism is/are known as decomposer organism/organisms?
1. Virus
2. Fungi
3. Bacteria
Select the correct answer using the codes given below:

50% studentsanswered this correctly

Important Questions on Environment & Ecology

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 82
With reference to food chains in ecosystems, consider the following statements :
1. A food chain illustrates the order in which a chain of organisms feed upon each other.
2. Food chains are found within the populations of a species.
3. A food chain illustrates the numbers of each organism which are eaten by others.
Which of the statements given above is/are correct?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 84
An aquatic plant introduced from America to check pollution turned out to be a troublesome weed in Indian water bodies. The name of this 'invasive alien species' is:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 85

Which among the following within processes helps in evolution?

1. Natural selection

2. Adaptation

3. Mutation

4. Reproductive isolation

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 86
Study of plant communities in relation to their habitats of a given ecosystem is called as:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 87
Which one has the least effect upon a terrestrial ecosystem ?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 88
Select the correct sequence of food chain in the arctic waters from the following.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 89
Eutrophication of lakes is a consequential effect of the accumulation of:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 6 - Environment & Ecology>Exercise 1>Q 90
Transition zone between two ecosystems is