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Class 7 General Science, Chapter # 4, MCQs with answers
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- The basic functional unit of an environment:
- Ecosystem
- food
- Reproduce
- Green plants
- _____ is the study of the relationship of living organisms with their environment.
- Biology
- Ecology
- Botany
- Zoology
- Each ecosystem has _____ components.
- _____ Plants obtain nutrients from the soil and Carbon dioxide from the air.
- Producers, consumers and decomposers are:
- Abiotic components
- Secondary components
- Primary consumers
- Biotic components
- Producers include all the
- Green plants
- Animals
- Birds
- Human beings
- _____ are animals feeding on producers and other animals for their food.
- Producers
- Decomposers
- Microbes
- Consumers
- _____ include herbivores, carnivores and omnivores.
- Consumers
- Decomposers
- Microbes
- Producers
- ______ are primary consumers and depend directly on plants for their survival.
- Carnivores
- Omnivores
- Herbivores
- Producers
- ______ are secondary consumers feeding on primary consumers and get food from other animals.
- Omnivores
- Herbivores
- Carnivores
- Producers
- _____ depend on both plants and animals for their food and are tertiary consumers.
- Omnivores
- Herbivores
- Carnivores
- Decomposers
- ______ include saprophytes (fungi and bacteria)
- Omnivores
- Herbivores
- Carnivores
- Decomposers
- _______ converts the dead animals and plants into fertilizers, nitrogen and carbon dioxide.
- Producers
- Decomposers
- Algae
- Consumers
- The natural home of an organism is called
- forest
- habitat
- Deserts
- Mountains
- ______ is a place which gets enough rainfall and have warm temperature for lots of trees to grow
- Wet land
- Deserts
- Forest
- Grassland
- Forest acts as a natural ______ of water.
- absorber
- Observer
- Producer
- Habitat
- Fungi and mosses are mostly found in _____ habitat.
- Forest
- Grassland
- Wet land
- Tundra
- _____ is a hot, dry and sandy area with little rainfall.
- Forest
- Grassland
- Desert
- Tundra
- The air is very hot and dry in ____
- Forest
- Grassland
- Desert
- Tundra
- In desert, most animal sleep during day time and come out at night to eat are called:
- Producers
- Nocturnal
- Decomposers
- Consumers
- The place where there is not enough rainfall and occupied mostly by the grasses.
- Forest
- Grassland
- Desert
- Tundra
- _____ is an environment that is a very cold, windy and treeless area.
- Forest
- Grassland
- Desert
- Tundra
- _____ land is covered with ice and snow almost throughout the year.
- Forest
- Grassland
- Desert
- Tundra
- Tundra is also called _____
- Forest
- Grassland
- Desert
- Polar
- The tundra is characterized by _______
- permafrost
- nocturnal
- Both of them
- None of these
- A layer of soil and partially decomposed organic matter that is frozen year-round.
- permafrost
- nocturnal
- Both of them
- None of these
- a/an ______ is a way through which an animal’s body helps it to survive or live in its environment.
- Migration
- Hibernation
- nocturnal
- Adaptation
- Many birds migrate in the ______ season.
- Spring
- Autumn
- Winter
- Summer
- Many _____ migrate to deeper and warmer water
- _____ is a state of inactivity in animals during the winter season.
- Dormancy
- Hibernation
- Aestivation
- Camouflage
- _____ is similar to hibernation but occurs in some animals during summer or dry period
- Dormancy
- Hibernation
- Aestivation
- Camouflage
- ______ is a way of concealing when an animal blends with its surrounding environment to help it to hide.
- Dormancy
- Hibernation
- Aestivation
- Camouflage
- _____ is a period of inactivity in plants.
- Dormancy
- Hibernation
- Aestivation
- Camouflage
- Most habitats are generally found near the ____
- Mountains
- Deserts
- Cities
- Water
- _____ Shows the way how energy flows in the form of food through organisms in an ecosystem
- Food web
- Energy
- Food chains
- Link
- The _____ is the primary source of energy in a food chain.
- A food chain always starts with a _____ , which is an organism that can make its own food.
- Each organism in the food chain is called a _____
- A food web is a network of more than two _____
- Food chains
- Animals
- plants
- Links
- Living place of an organism is called:
- Habitat
- Environment
- Ecosystem
- Species
- Many food chains unite to make a:
- Food cycle
- Food web
- Food pyramid
- Mega food chain
- An animal that feed on plants is called:
- Primary consumer
- Producer
- Secondary consumer
- Decomposer
- In winter most cold blooded animals disappear because they:
- Die
- Hibernate
- Migrate
- Eaten away
- The meat eaters are also known as:
- Carnivores
- Herbivores
- Omnivores
- Producers
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