Things around us Worksheet-3
Multiple-Choice Questions:
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Plants also respire to obtain energy from the food they make by _____.
(A) Chlorophyll (B) Respiration (C) Photosynthesis
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_____ is not used to prepare chlorophyll.
(A) Soil (B) Carbon dioxide
(C) Sunlight (D) Water
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The nutrients released from dead bodies by the action of scavengers and decomposers get mixed with the soil and are again absorbed by plants. This process is called ______.
(A) Recycling of plants (B) Recycling of minerals
(C) Recycling of animals (D) Recycling of nutrients
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They are primary consumers
(A) Tiger and Bear (B) Rabbit and deer
(C) Tiger and lion (D) Human being and bear
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Following is a cold-blooded animal.
(A) Reptiles (B) Birds (C) Mammals
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Soil is very rich in minerals like
(A) Magnesium, potassium, and calcium
(B) Magnesium, potassium, and manganese
(C) Magnesium, potassium, and phosphorus
(D) Magnesium, potassium, and zinc
True/False:
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Photosynthesis gives plants the special ability to make their own food using sunlight, water, and carbon dioxide.
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Plants absorb nutrients such as nitrogen, phosphorus, and calcium from the soil.
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Animals that feed on the dead bodies of other animals are called decomposers.
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Scavengers and decomposers help in the recycling of nutrients in the environment.
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Carnivores such as human being and bear feed on both plants and other animals.
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Scavengers and decomposers feed on dead plants and animals and release the nutrients trapped inside their bodies into the soil.
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Earth is the only known planet that has a temperature suitable for life to exist.
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Mammals and birds are cold-blooded.
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Green plants play a very important role in maintaining the balance of oxygen and carbon dioxide in the environment.
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Dust suspended in the air are not blown away by wind, they combine with smoke and water vapour and remain suspended in the air as smoky environment.
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Water dissolves vital gases like oxygen and carbon dioxide and allows sunlight to penetrate water bodies.
Answer:
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(C)
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(A)
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(D)
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(B)
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(A)
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(C)
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False
Exp: Chlorophyll gives plants the special ability to make their own food using sunlight, water, and carbon dioxide.
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True
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False
Exp: Animals that feed on the dead bodies of other animals are called scavengers.
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True
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False
Exp: Omnivores such as human being and bear feed on both plants and other animals.
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True
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True
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False
Exp: Mammals and birds are warm-blooded.
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True
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False
Exp: Dust suspended in the air are not blown away by wind, they combine with smoke and water vapour and remain suspended in the air as smog.
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True