38 + Mcqs in Ecosystem Page 1 McqOptions

1.	Which of the following is not a type of organism in the food chain?
A.	Producer
B.	Cons
C.	Electrical Insulators Electrical Conductors Copper, gold Nickel, clay
D.	Decomposer
Answer» D. Decomposer

Discussion

2.	Directions: Fill in the blanks Desert ecosystems are located in regions that receive very less __(47)__ . Due to extremely high __(48)__, low water availability and intense __(49)__, fauna and flora are scarce and poorly developed.
A.	humidity
B.	air pressure
C.	A cell converts chemical energy to electrical energy.
D.	rainfall
Answer» E.

Discussion

3.	What are those plants and animals called that get their energy by eating other things?
A.	Producers
B.	Herbivores
C.	Copper
D.	Consumers
Answer» E.

Discussion

4.	Below are given the parts of a food chain. Which of the arrangements is in the correct order?
A.	Flower\[\to \] Caterpillar \[\to \] Bird
B.	Bird \[\to \] Caterpillar \[\to \] Flower
C.	Open Open Closed Closed
D.	Bird \[\to \] Flower \[\to \] Caterpillar
Answer» B. Bird \[\to \] Caterpillar \[\to \] Flower

Discussion

5.	The picture below shows a plant. In which type of ecosystem do you expect to find this?
A.	Grassland
B.	Desert
C.	All the statements are correct.
D.	Marine
Answer» C. All the statements are correct.

Discussion

6.	What does every food web begin with?
A.	Decomposers
B.	Air
C.	A, B and C only
D.	Nutrients
Answer» D. Nutrients

Discussion

7.	Largest ecosystem of the world are [AIIMS 1985; MHCET 2000]
A.	Grasslands
B.	Great lakes
C.	Oceans
D.	Forests
Answer» D. Forests

Discussion

8.	In a given ecosystem number of individuals in species remain more or less constant over a period of time. The constancy of number is maintained by
A.	Parasite
B.	Predators
C.	Man
D.	Available food
Answer» E.

Discussion

9.	If phytoplankton are destroyed in the sea, then [DPMT 1984]
A.	Algae will get more space to grow
B.	Primary consumers will grow luxuriently
C.	It will affect the food chain
D.	No effect will be seen
Answer» D. No effect will be seen

Discussion

10.	Snake generally belongs to [CPMT 1991]
A.	Saprophytes
B.	Primary consumer
C.	Second trophic level
D.	None of these
Answer» E.

Discussion

11.	Generally the food chain has how many trophic levels [MP PMT 1990, 2001, 02; BHU 2001]
A.	One
B.	Two
C.	Three or Four
D.	Three
Answer» D. Three

Discussion

12.	The pyramid of number in a grassland ecosystem is [MP PMT 1998; BHU 2002]
A.	Always erect
B.	Always inverted
C.	Either erect or inverted
D.	Irregular
Answer» B. Always inverted

Discussion

13.	First link in any food chain is a green plant because [RPMT 1985; CPMT 1985]
A.	Green plants can synthesize food
B.	They can eat everything
C.	Fixed at one place
D.	None of the above
Answer» B. They can eat everything

Discussion

14.	Green plants constitute [CPMT 1983, 84, 88; MP PMT 1999]
A.	First trophic level
B.	Second trophic level
C.	Third trophic level
D.	Complete food chain
Answer» B. Second trophic level

Discussion

15.	Which ecosystem does not show variations dependent upon geographic location and rainfall
A.	Marine ecosystem
B.	Fresh water ecosystem
C.	Desert ecosystem
D.	Tropical ecosystem
Answer» B. Fresh water ecosystem

Discussion

16.	Which of the following has the greatest amount of energy
A.	Insectivores
B.	Carnivores
C.	Herbivores
D.	Autotrophs
Answer» E.

Discussion

17.	Pyramid of number becomes partly inverted partly erect for
A.	Aquatic ecosystem
B.	Terrestrial ecosystem
C.	Tree ecosystem
D.	All the above
Answer» D. All the above

Discussion

18.	Micro-consumers are
A.	Primary consumers
B.	Secondary consumers
C.	Tertiary consumers
D.	Decomposers
Answer» E.

Discussion

19.	These belong to the catergory of primary consumers ... [KCET 2004]
A.	Snakes and frogs
B.	Water insects
C.	Eagle and snakes
D.	Insects and cattle
Answer» E.

Discussion

20.	In forest ecosystem, fungi is grouped as [CPMT 2003]
A.	Producer
B.	Consumer
C.	Secondary consumer
D.	Decomposer
Answer» E.

Discussion

21.	The maximum biomass of living diatoms to be found in [AIEEE 2003]
A.	Marine pelagic habitats
B.	Moist soil and swamps
C.	Deep coastmines
D.	Salt lakes
Answer» B. Moist soil and swamps

Discussion

22.	In food chain initial organisms are [MP PMT 2002]
A.	Top consumers
B.	Secondary consumers
C.	Primary consumers
D.	Photosynthates
Answer» E.

Discussion

23.	The above represents
A.	Food chain
B.	Food web
C.	A population
D.	Ecosystem
Answer» C. A population

Discussion

24.	Energy enters into the ecosystem through [CBSE PMT 2001; CPMT 2003]
A.	Herbivores
B.	Carnivores
C.	Producers
D.	Decomposers
Answer» D. Decomposers

Discussion

25.	The flora and fauna in lakes or ponds are [AIIMS 2000]
A.	Lentic biota
B.	Lotic biota
C.	Abiotic biota
D.	Field layer
Answer» B. Lotic biota

Discussion

26.	A rat feeding upon potato tuber is [KCET 1999]
A.	Producer
B.	Carnivore
C.	Decomposer
D.	Primary consumer
Answer» E.

Discussion

27.	Ecosystem is defined as [CPMT 1998]
A.	Relation between plants and animals
B.	Relation between biotic and physical components
C.	Relation between producers and decomposers
D.	None of these
Answer» C. Relation between producers and decomposers

Discussion

28.	In an ecosystem in abiotic components which of the following occur [MP PMT 1999]
A.	Flow of energy
B.	Cycling of materials
C.	Consumers
D.	Flow of energy and cycling of materials
Answer» E.

Discussion

29.	The number of individuals of a species in a particular ecosystem at a given time remains constant due to [MP PMT 1998]
A.	Man
B.	Parasites
C.	Predators
D.	Available food
Answer» D. Available food

Discussion

30.	A lake ecosystem is [MP PMT 1997]
A.	Artificial
B.	Abiotic
C.	Natural
D.	Hydrological
Answer» D. Hydrological

Discussion

31.	Biological equilibrium is found among the [MP PMT 1998; MHCET 2003]
A.	Producer plants
B.	Consumers and producers
C.	Decomposers
D.	Producers, consumers and decomposers
Answer» E.

Discussion

32.	Transfer of energy from one trophic level to other trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is [CBSE PMT 1996; AIEEE 2004]
A.	0.25
B.	0.5
C.	0.1
D.	0.05
Answer» D. 0.05

Discussion

33.	Which of the following is the most stable ecosystem [CBSE PMT 1995; BHU 2002; MP PMT 2000]
A.	Mountain
B.	Desert
C.	Forest
D.	Ocean
Answer» E.

Discussion

34.	In lake ecosystem, pyramid biomass is [MP PMT 1993; Bihar 2005]
A.	Upright
B.	Inverted
C.	Anything is possible
D.	None is correct
Answer» C. Anything is possible

Discussion

35.	Which group of living organisms given below is a link in food chain between green plants and hawk
A.	Grasshopper, frog and snake
B.	Grasshopper, rat and snake
C.	Millipedes, centipedes and sparrow
D.	Earthworm, hen and rat
Answer» B. Grasshopper, rat and snake

Discussion

36.	In ecosystem lithosphere is concerned with
A.	Gases
B.	Minerals
C.	Water
D.	All the above
Answer» C. Water

Discussion

37.	Which of the following word is related to Homo sapiens [MP PMT 1994]
A.	Herbivor
B.	Carnivor
C.	Autotroph
D.	Omnivor
Answer» E.

Discussion

38.	Which of the following ecosystems have more productivity in an unit area
A.	Grassland
B.	Marine ecosystem
C.	Pond ecosystem with algae
D.	Tree ecosystem
Answer» D. Tree ecosystem

Discussion

Explore topic-wise MCQs in Science.

Which of the following is not a type of organism in the food chain?

Directions: Fill in the blanks Desert ecosystems are located in regions that receive very less (47) . Due to extremely high (48), low water availability and intense (49), fauna and flora are scarce and poorly developed.

What are those plants and animals called that get their energy by eating other things?

Below are given the parts of a food chain. Which of the arrangements is in the correct order?

The picture below shows a plant. In which type of ecosystem do you expect to find this?

What does every food web begin with?

Largest ecosystem of the world are [AIIMS 1985; MHCET 2000]

In a given ecosystem number of individuals in species remain more or less constant over a period of time. The constancy of number is maintained by

If phytoplankton are destroyed in the sea, then [DPMT 1984]

Snake generally belongs to [CPMT 1991]

Generally the food chain has how many trophic levels [MP PMT 1990, 2001, 02; BHU 2001]

The pyramid of number in a grassland ecosystem is [MP PMT 1998; BHU 2002]

First link in any food chain is a green plant because [RPMT 1985; CPMT 1985]

Green plants constitute [CPMT 1983, 84, 88; MP PMT 1999]

Which ecosystem does not show variations dependent upon geographic location and rainfall

Which of the following has the greatest amount of energy

Pyramid of number becomes partly inverted partly erect for

Micro-consumers are

These belong to the catergory of primary consumers ... [KCET 2004]

In forest ecosystem, fungi is grouped as [CPMT 2003]

The maximum biomass of living diatoms to be found in [AIEEE 2003]

In food chain initial organisms are [MP PMT 2002]

The above represents

Energy enters into the ecosystem through [CBSE PMT 2001; CPMT 2003]

The flora and fauna in lakes or ponds are [AIIMS 2000]

A rat feeding upon potato tuber is [KCET 1999]

Ecosystem is defined as [CPMT 1998]

In an ecosystem in abiotic components which of the following occur [MP PMT 1999]

The number of individuals of a species in a particular ecosystem at a given time remains constant due to [MP PMT 1998]

A lake ecosystem is [MP PMT 1997]

Biological equilibrium is found among the [MP PMT 1998; MHCET 2003]

Transfer of energy from one trophic level to other trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is [CBSE PMT 1996; AIEEE 2004]

Which of the following is the most stable ecosystem [CBSE PMT 1995; BHU 2002; MP PMT 2000]

In lake ecosystem, pyramid biomass is [MP PMT 1993; Bihar 2005]

Which group of living organisms given below is a link in food chain between green plants and hawk

In ecosystem lithosphere is concerned with

Which of the following word is related to Homo sapiens [MP PMT 1994]

Which of the following ecosystems have more productivity in an unit area

Explore topic-wise MCQs in Science.

Which of the following is not a type of organism in the food chain?

Directions: Fill in the blanks Desert ecosystems are located in regions that receive very less __(47)__ . Due to extremely high __(48)__, low water availability and intense __(49)__, fauna and flora are scarce and poorly developed.

What are those plants and animals called that get their energy by eating other things?

Below are given the parts of a food chain. Which of the arrangements is in the correct order?

The picture below shows a plant. In which type of ecosystem do you expect to find this?

What does every food web begin with?

Largest ecosystem of the world are [AIIMS 1985; MHCET 2000]

In a given ecosystem number of individuals in species remain more or less constant over a period of time. The constancy of number is maintained by

If phytoplankton are destroyed in the sea, then [DPMT 1984]

Snake generally belongs to [CPMT 1991]

Generally the food chain has how many trophic levels [MP PMT 1990, 2001, 02; BHU 2001]

The pyramid of number in a grassland ecosystem is [MP PMT 1998; BHU 2002]

First link in any food chain is a green plant because [RPMT 1985; CPMT 1985]

Green plants constitute [CPMT 1983, 84, 88; MP PMT 1999]

Which ecosystem does not show variations dependent upon geographic location and rainfall

Which of the following has the greatest amount of energy

Pyramid of number becomes partly inverted partly erect for

Micro-consumers are

These belong to the catergory of primary consumers ... [KCET 2004]

In forest ecosystem, fungi is grouped as [CPMT 2003]

The maximum biomass of living diatoms to be found in [AIEEE 2003]

In food chain initial organisms are [MP PMT 2002]

The above represents

Energy enters into the ecosystem through [CBSE PMT 2001; CPMT 2003]

The flora and fauna in lakes or ponds are [AIIMS 2000]

A rat feeding upon potato tuber is [KCET 1999]

Ecosystem is defined as [CPMT 1998]

In an ecosystem in abiotic components which of the following occur [MP PMT 1999]

The number of individuals of a species in a particular ecosystem at a given time remains constant due to [MP PMT 1998]

A lake ecosystem is [MP PMT 1997]

Biological equilibrium is found among the [MP PMT 1998; MHCET 2003]

Transfer of energy from one trophic level to other trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is [CBSE PMT 1996; AIEEE 2004]

Which of the following is the most stable ecosystem [CBSE PMT 1995; BHU 2002; MP PMT 2000]

In lake ecosystem, pyramid biomass is [MP PMT 1993; Bihar 2005]

Which group of living organisms given below is a link in food chain between green plants and hawk

In ecosystem lithosphere is concerned with

Which of the following word is related to Homo sapiens [MP PMT 1994]

Which of the following ecosystems have more productivity in an unit area

Directions: Fill in the blanks Desert ecosystems are located in regions that receive very less (47) . Due to extremely high (48), low water availability and intense (49), fauna and flora are scarce and poorly developed.