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Living Organisms - Characteristics and Habitats Test 2

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Living Organisms - Characteristics and Habitats Test 2
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  • Question 1
    1 / -0
    The removal of the wastes from the body is known as 
    Solution
    Excretion is process by which nitrogenous waste is thrown out of body. It is done to avoid toxicity in body by the waste, maintain pH and water level. It's done by various organs like kidney in human, nephridia in worms, etc.
    So, the correct option is 'Excretion'.
  • Question 2
    1 / -0
    The living and non-living things can be distinguished by 
    Solution
    The living things require energy for all basic activities like respiration, movement, reproduction. This energy is obtained by break down of food, therefore, living things need food. But non-living things do not require such energy thus they do not need food.
    Hence correct option is B "The living things need food".
  • Question 3
    1 / -0
    Reproduction is the ability of the living organisms to 
    Solution
    • Reproduction is the process of producing offspring from parents. 
    • It can be sexual, asexual or vegetative. 
    • Only sexual reproduction involves the fusion of gametes. It ensures the continuity of a species by producing its own kind and also a transfer of genes in further generations.
    So the correct option is 'Produce similar of its kind'.
  • Question 4
    1 / -0
    Grasslands and desert are the examples of 
    Solution
    A habitat is an ecological or environmental area inhabited by one or more living species.
    • Aquatic habitat is a habitat with water
    • Terrestrial habitats are ones that are found on land.
    • Coastal habitats are on coasts. Coasts are places where the land meets the sea.
    • Mountain habitats are on mountains.
    • Grasslands and deserts are habitats on land. 
    So, the correct answer is 'Terrestrial habitat'.
  • Question 5
    1 / -0
    Abiotic factors are 
    Solution
    Abiotic components or abiotic factors are non-living chemical and physical parts of the environment that influence or affect the functioning of the ecosystem and the organisms in it. Abiotic factors include climate, habitat, temperature, wind, rain, pollution, sunlight, etc.
    So, the correct option is A.
  • Question 6
    1 / -0
    The examples of the biotic factors are
  • Question 7
    1 / -0
    A living organism is unexceptionally differentiated from a non-living structure on the basis of
    Solution
    All organisms, from primitive prokaryotes to most advanced and complex eukaryotes, are able to sense and respond to environmental factors. The stimuli are perceived by sense organs in higher animals through sensory receptors in the eyes, ears, nose etc. Plants do not possess such sense organs. However, they do respond to external factors such as light, water, temperature, pollutants, other organisms, etc. Human beings have an additional facility of self consciousness (awareness of self). Consciousness and response to stimuli are said to be defining properties of living organisms.
    So the correct option is D.
  • Question 8
    1 / -0
    Which of the following is a type of habitat?
    Solution
    • The surroundings where plants and animals live are called their habitat. For example, the habitat of a toad is freshwater, while the habitat of a cactus is a desert. 
    • The organisms depend on their habitat for their food, water, air, shelter, and other needs. 
    • Land habitats are also called terrestrial habitats, e.g. croplands, grasslands, mountains, and forests, etc. 
    • Habitats within the water are aquatic habitats, e.g. sea, oceans, estuaries, etc. 
    • An aquarium is an artificial aquatic habitat.

    So, the correct answer is option D.
  • Question 9
    1 / -0
    Plants are considered as living organism because
    Solution
    • As a response to external stimuli, the plants show movement. For eg. plants tend to move towards the source of light, this is positive phototropism. It is prominently seen in sunflower. It also shows hydrotropism in the roots. 
    • It is proved experimentally that plants can breathe. 
    • The basic principle of breathing includes the exchange of gases. It is seen that plants absorb carbon dioxide and release oxygen.
    So the correct option is D "both A and C."
  • Question 10
    1 / -0
    What does Habitat refers to?
    Solution
    The natural home or environment of an animal, plant, or other organism is known as that animal's habitat. It also includes the social environment and Economic lifestyle of the people as Habitat encompasses a person's usual or preferred surroundings.
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