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Environment

Description: Environment Scan test
Number of Questions: 40
Created by:
Tags: Environment Scan test Life Processes
Attempted 0/40 Correct 0 Score 0

A group of interbreeding individuals forms a _____.

  1. community

  2. species

  3. ecosystem

  4. population


Correct Option: B

The ____________ constitute the fourth trophic level.

  1. producers

  2. herbivores

  3. carnivores

  4. top carnivores


Correct Option: D

____________ is the abiotic component of a pond ecosystem.

  1. Fish

  2. Frog

  3. Water

  4. Bacteria


Correct Option: C

What is the accumulation of non-biodegradable substances at each trophic level referred to as?

  1. Food web

  2. Biological magnification

  3. Decomposition

  4. Fermentation


Correct Option: B

Which of the following components is not recycled in nature?

  1. Nitrogen

  2. Water

  3. Sodium

  4. Carbon


Correct Option: C

From the autotrophs, the energy goes to the _________ and then finally to the__________.

  1. heterotrophs and producers

  2. carnivores and omnivores

  3. heterotrophs and decomposers

  4. producers and decomposers


Correct Option: C

In which of the following trophic levels can the herbivores be found?

  1. First

  2. Second

  3. Third

  4. Fourth


Correct Option: B

____________ is not an example of an ecosystem.

  1. Aquarium

  2. Pond

  3. Desert

  4. Air


Correct Option: D

The lowest level of organization is _____.

  1. cellular level

  2. ecosystem

  3. molecular level

  4. population level


Correct Option: C

Which of the following ecosystems is natural?

  1. Crop field

  2. River

  3. Aquarium

  4. Park


Correct Option: B

____________ is not the component of an ecosystem.

  1. Plant

  2. Soil

  3. Sunlight

  4. Biome


Correct Option: D

On which of the following positions can a tiger be placed in a food chain?

  1. Primary consumer

  2. Producer

  3. Decomposer

  4. Tertiary consumer


Correct Option: D

Which of the following does not belong to higher level of organization?

  1. Biome

  2. Molecular level

  3. Ecosystem

  4. Community


Correct Option: B

Which of the following is a phytoplankton?

  1. Bacteria

  2. Algae

  3. Fungi

  4. Protozoa


Correct Option: B

Which of the following chemicals is linked with the depletion of ozone in the atmosphere?

  1. Chlorofluorocarbons

  2. Hydrogen peroxide

  3. Carbon dioxide

  4. Sulphur dioxide


Correct Option: A

What do the interacting organisms in an area together with the non-living constituents of the environment form?

  1. Ecosystem

  2. Biome

  3. Trophic level

  4. Biotic factor


Correct Option: A

Which of the following animals can be a tertiary consumer?

  1. Deer

  2. Cow

  3. Lion

  4. Giraffe


Correct Option: C

In which trophic levels are the plants placed in a food chain or an ecological pyramid?

  1. First

  2. Second

  3. Third

  4. Fourth


Correct Option: A

Man belongs to the ____________ category of consumers.

  1. herbivores

  2. carnivores

  3. omnivores

  4. parasites


Correct Option: C

Top carnivores feed upon the _____.

  1. plants

  2. zooplanktons

  3. herbivores

  4. small carnivores


Correct Option: D

The very minute or microscopic organisms freely floating on the surface of water in a pond are known as _____.

  1. herbivores

  2. omnivores

  3. plankton

  4. decomposes


Correct Option: C

The sequence of living organisms in a community in which one organism consumes another with the transfer of food energy is known as _____.

  1. food chain

  2. food web

  3. ecosystem

  4. biosphere


Correct Option: A

What is the position of grass in a food chain?

  1. Producer

  2. Primary carnivore

  3. Secondary carnivore

  4. Tertiary carnivore


Correct Option: A

Which of the following options is not represented by an ecological pyramid?

  1. Numbers

  2. Energy

  3. Biomass

  4. Body weight


Correct Option: D

How many oxygen atoms are present in an ozone molecule?

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: C

Which of the following is a primary consumer?

  1. Deer

  2. Plants

  3. Lion

  4. Fish


Correct Option: A

What is the type of energy flow in an ecosystem?

  1. Unidirectional

  2. Bidirectional

  3. Multidirectional

  4. None of these


Correct Option: A

Which of the following organisms can synthesize their food by the process of photosynthesis?

  1. Algae

  2. Fungi

  3. Virus

  4. Zooplankton


Correct Option: A

Which of the following statements is true?

  1. The number of living organisms continuously decreases as we move up an ecological pyramid

  2. The pyramid of biomass represents the biomass of an ecosystem.

  3. The pyramid of biomass represents the biomass of an species.

  4. The number of plants will be less than the number of cows in an ecological pyramid.


Correct Option: A

The organisms which consume both plant as well as animal products are known as ________.

  1. herbivores

  2. carnivores

  3. piscivores

  4. omnivores


Correct Option: D

What percent of energy present at one trophic level is passed on to the next trophic level?

  1. 1

  2. 2

  3. 5

  4. 10


Correct Option: D

What percentage of the solar energy that falls on the leaves is utilized by the plants for the process of photosynthesis?

  1. 1

  2. 2

  3. 5

  4. 10


Correct Option: A

As the trophic level in an ecological pyramid increases, the number of living organisms _____.

  1. increases

  2. decreases

  3. becomes zero

  4. remains same


Correct Option: B

If 15000 cal of solar energy is incident on plants, how many kilocalories of energy will be transferred to the herbivores?

  1. 150

  2. 15

  3. 1.5

  4. 0.15


Correct Option: C

Which of the following does not contribute to environmental degradation?

  1. Pollutants

  2. Pesticides

  3. Poisonous chemicals

  4. Plants


Correct Option: D

The ozone protects the earth from the ____________ of the sun.

  1. U.V. rays

  2. X rays

  3. gamma rays

  4. infra red rays


Correct Option: A

The trophic levels represent the ______.

  1. steps in a community

  2. steps in a food chain

  3. steps in an ecosystem

  4. steps in a biosphere


Correct Option: B

____________ is the ultimate source of energy.

  1. Plants

  2. Animals

  3. Environment

  4. Sun


Correct Option: D

What do you infer from the pyramid of energy?

  1. Loss of individuals at each trophic level.

  2. Loss of energy at each trophic level.

  3. Loss of biomass at each trophic level.

  4. Loss of weight at each trophic level.


Correct Option: B

The ____________ fix up the solar energy and make it available in a food chain.

  1. producers

  2. consumers

  3. decomposers

  4. both (1) and (2)


Correct Option: A
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