Man and His Environment Test 01

Total Questions: 31

1 - Which of the following is the abiotic component of an ecosystem?

A ) Producers
B ) Herbivores
C ) Carnivores
D ) Oxygen ✅

2 - When we eat the onion, our trophic level is;

A ) Primary consumer ✅
B ) Secondary Consumer
C ) Decomposer
D ) Producer

3 - Identify the correctly matched pair:

A ) Rainfall-biotic factors in ecosystem
B ) Global warming formation of fossil fuels
C ) Renewable natural resources-air ✅
D ) Corn- secondary consumer

5 - In an ecosystem the flow of___ is one way, while ___is / are constantly recycled.

A ) Minerals , energy
B ) Energy , minerals ✅
C ) Oxygen ,energy
D ) Glucose, water

8 - Which form of nitrogen is taken by the producers of the ecosystem?

A ) Nitrogen gas
B ) Ammonia
C ) Nitrites
D ) Nitrates ✅

9 - The type of environment in which a particular species lives is called;

A ) Ecosystem
B ) Habitat ✅
C ) Biosphere
D ) Community

10 - Which of the following organisms are decomposers?

A ) Fungi
B ) Algae
C ) Bacteria
D ) Both a &c

11 - The lowest trophic level of an ecosystem always includes:

A ) Herbivores
B ) Carnivores
C ) Producers ✅
D ) Decomposers

12 - pH range of acid rain is:

A ) 3-6 ✅
B ) 3-7
C ) 3-5
D ) 3-11

14 - Which one is not an example of abiotic factors?

A ) Docomposers ✅
B ) Light
C ) Water
D ) Soil

15 - An organism that actively hunts other organisms is called:

A ) Prey
B ) Predator ✅
C ) Parasite
D ) Host

17 - Organisms that make their own food with help of sunlight, CO2 and H2O are called;

A ) Consumers
B ) Producers ✅
C ) Decomposers
D ) Predators

18 - The conversation of ammonia to nitrates is carried out by soil bacteria. This process is called:

A ) Nitrification ✅
B ) Denitrification
C ) Nitrogen fixation
D ) Assimilation

20 - Water, soil, temperature, wind and sunlight are example of:

A ) Biotic factors
B ) Biomass
C ) Environment
D ) Abiotic factors ✅

22 - A relationship between species in which both species get benefit is called:

A ) Parasitism
B ) Mutualism ✅
C ) Symbiosis
D ) Commensalism

24 - A network of all the feeding relationships in an ecosystem is called:

A ) Food chain
B ) Food web ✅
C ) Trophic level
D ) Energy flow

25 - The thickness of biosphere is:

A ) 02 km
B ) 20 km ✅
C ) 50 km
D ) 200 km

27 - The material flow from one trophic level to the next by means of;

A ) Food chains
B ) Food web
C ) Both a & b
D ) Food cycle

28 - The base of food chain is always formed by;

A ) Producer ✅
B ) Primary consumer
C ) Decomposer
D ) Secondary consumer

29 - In 1927, ____developed the concept of ecological pyramids.

A ) Kelvin
B ) Lamarck
C ) Charles Elton ✅
D ) Charles Darwin

31 - Which one of the following is not an example of fossil fuels?

A ) Plants ✅
B ) Peat
C ) Coal
D ) Natural Gas