Class 10 Science Chapter 13 MCQ Our Environment
MCQ on Our Environment Class 10
Question 1.
Among the following pairs, which one is a mis-matched pair ?
A) Plant – Producer.
B) Rabbit – Primary consumer.
C) Lion – Carnivore.
D) Giraffe – Secondary consumer.
Answer:
D) Giraffe – Secondary consumer.
Question 2.
The correct sequence of a food chain
A) Plants → Grasshopper → Frog → Snake → Hawk.
B) Plant → Frog → Grasshopper → Hawk → Snake.
C) Plant → Hawk → Snake → Frog → Grasshopper.
D) Plant → Snake → Frog → Hawk → Grasshopper.
Answer:
A) Plants → Grasshopper → Frog → Snake → Hawk.
Question 3.
Identify the correct one from the following food chains.
A) Eagle → Rat → Snake → Grains.
B) Grains → Rat → Snake → Eagle.
C) Grains → Eagie → Rat → Snake.
D) Rat → Snake → Grains → Eagle.
Answer:
B) Grains → Rat → Snake → Eagle.
Question 4.
The region of the world of living things is termed as
A) Biosphere
B) Ecosystem
C) Food chain
D) Food web
Answer:
A) Biosphere
Question 5.
The arrows between each Item in a food chain always point from
A) Feeder to food
B) Food to feeder
C) Animals to animals
D) Carnivores to herbivores
Answer:
B) Food to feeder
Question 6.
First tropic level of a ecological pyramid includes
A) Producers
B) Primary consumers
C) Secondary consumers
D) Tertiary consumers
Answer:
A) Producers
Question 7.
This pyramid shows the population of organisms at each tropic level in a food chain
A) Pyramid of biomass
B) Pyramid of number
C) Pyramid of Egypt
D) Pyramid of energy
Answer:
B) Pyramid of number
Question 8.
In a food chain, the third trophic level is always occupied by
A) Producers
B) Primary consumers
C) Carnivores
D) Decomposers
Answer:
C) Carnivores
Question 9.
These organisms helps in recycling of materials in an ecosystem
A) Producers
B) Saprophytes
C) Omnivores
D) Herbivores
Answer:
B) Saprophytes
Question 10.
In the food chain comprising of a snake, grass, insect and frog, the secondary consumer is
A) Insect
B) Frog
C) Snake
D) Grass
Answer:
B) Frog
Question 11.
Arrange the following in sequential order.
1) Rat
2) Snake
3) Grain
4) Eagle
A) 3,2,1,4
B) 3,1,2,4
C) 4,1,2,3
D) 1,3,2,4
Answer:
B) 3,1,2,4
Question 12.
Complete the flow chart.
A) Rat
B) Wolf
C) Mosquito
D) Fly
Answer:
B) Wolf
Question 13.
Proper order of food chain is ……,…….. ( )
A) Eagle → rat → snake → grain
B) Grain → rat → snake → eagle
C) Snake → eagle → rat → grain
D) Rat → snake → grain → eagle
Answer:
B) Grain → rat → snake → eagle
Question 14.
In this food chain, the organism which belongs to the second trophic level is
A) Snake
B) Plant
C) Grasshopper
D) Frog
Answer:
C) Grasshopper
Question 15.
Identify the mismatched pair.
A) Producers i Plants
B) Herbivores – Cow, Rabbit
C) Predators – Lion, Tiger
D) Ecological pyramids – A.G. Tansley
Answer:
D) Ecological pyramids – A.G. Tansley
Question 16.
The primary consumer in the food chain comprising of a snake, insect, frog and grass is
A) Grass
B) Frog
C) Insect
D) Snake
Answer:
C) Insect
Question 17.
Arrange the following in the sequential order with reference to biomass.
1) Small fish
2) Zooplanktons
3) Phytoplanktons
4) Big fish
5) Man
A) 1,3,2,5,4
B) 3,2,1,4,5
C) 1,2,4,3,5
D) 2,1,3,5,4
Answer:
B) 3,2,1,4,5
Question 18.
Complete the flow chart.
A) Tertiary consumers
B) Primary producers
C) Planktons
D) Decomposers
Answer:
A) Tertiary consumers
Question 19.
Plants : Producers :: Frog : …..
A) Primary Consumer
B) Secondary Consumer
C) Tertiary Consumer
D) Top Carnivore
Answer:
B) Secondary Consumer
Question 20.
Arrange the food chain in the correct order.
A) 2,4,5,3,1
B) 1,4,5,2,3
C) 2,5,4,3,1
D) 2,4,5,1,3
Answer:
D) 2,4,5,1,3
Question 21.
Which one of the following acts as primary as well as secondary consumer in the forest ecosystem ?
A) Rabbit
B) Deer
C) Tiger
D) Man
Answer:
D) Man
Question 22.
This is an example for pyramid of biomass of ……….
A) Forest ecosystem
B) Desert ecosystem
C) Grassland ecosystem
D) Aquatic ecosystem
Answer:
D) Aquatic ecosystem
Question 23.
One of the following is not a consumer
A) Deer
B) Kangaroo
C) Dolphin
D) Diatoms
Answer:
D) Diatoms
Question 24.
In the above food chain, fish occupies
A) 1st trophic level
B) 2nd trophic level
C) 3rd trophic level
D) 4th trophic level
Answer:
C) 3rd trophic level
Question 25.
Which of the following has much accumulation of pollutants in this pyramid?( )
A) Diatoms
B) Zooplanktons
C) Fish
D) Man
Answer:
D) Man
Question 26.
Observe the food chain.
A) 15 kJ
B) 20 kJ
C) 10,000 kJ
D) 0.1 kJ
Answer:
D) 0.1 kJ
Question 27.
In the above food chain, this represents the second trophic level
A) Tiger
B) Tree
C) Fish
D) Deer
Answer:
D) Deer
Question 28.
In the above food relationship, which one represents the secondary consumer ?( )
A) Grass
B) Snake
C) Rabbit
D) Eagle
Answer:
B) Snake
Question 29.
This figure represents the following.
A) Pyramid of energy
B) Food web
C) Pyramid of numbers
D) The pyramid of biomass
Answer:
B) Food web
Question 30.
What percent of energy loss can be observed at each trophic level ?
A) 90 %
B) 70%
C) 60%
D) 10%
Answer:
D) 10%
Question 31.
The flow of energy in a food chain is minimum at
A) Herbivores
B) Primary consumers
C) Producers
D) Top carnivores
Answer:
D) Top carnivores
Question 32.
If the energy available at the producer level in a food chain is 200J, how much energy will be available at tertiary consumer level? ( 10% Law)
A) 20 J
B) 2 J
C) 0.2 J
D) 200 J
Answer:
C) 0.2 J
Question 33.
If the energy available at teritiary consumer level is 20 J in a food chain, how much energy will be available at the primary consumer level ? ( 10% Law)
A) 2000 J
B) 1000 J
C) 200 J
D) 20 J
Answer:
A) 2000 J
Question 34.
Arrange the following in the correct order with reference to biomass.
1) Tiger -0.1 KJ
2) Rabbit – 100 KJ
3) Grass – 1000 KJ
4) Fox – 10 KJ
A) 3,2,4,1
B) 1,3,2,4
C) 1,2,4,3
D) 4,1,2,3
Answer:
A) 3,2,4,1
Question 35.
Complete the flow chart.
A) Producers
B) Predators
C) Parasites
D) Trophic level
Answer:
A) Producers
Question 36.
Write the proper order of food chain.
1) Grass
2) Goat
3) Lion
A) 3,2,1
B) 1,3,2
C) 1,2,3
D) 3,1,2
Answer:
C) 1,2,3