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Life Processes Test - 38

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Life Processes Test - 38
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  • Question 1
    1 / -0
    ........... involves in the intake of complex material prepared by other organisms.
    Solution
    Autotrophic nutrition is observed in plants. Plants do not eat like animals but use sunlight, carbon dioxide and water to produce food. Animal obtains energy from the plant and other animals because they do contain chlorophyll pigment and thus, can not produce their own food and called as heterotrophs. Thus, heterotrophic nutrition involves in the intake of complex material prepared by another organism.
  • Question 2
    1 / -0
    The movement of soluble products through the vascular tissue of plants is called:
    Solution
    The movement of soluble products through the vascular tissue is called translocation. Transpiration is the loss of water in the form of water vapour, through the stomata. Transcription is the process of the synthesis of RNA from DNA. Transduction is the process of the exchange of genetic material in bacteria through viruses.
  • Question 3
    1 / -0
    The transpiration organ in plant is
    Solution
    Stomata are a part of epidermal system in plants. Transpiration occurs through stomata in leaves of plants.
  • Question 4
    1 / -0
    An artery is a blood vessel that carries blood:
    Solution

    Arteries are blood vessels that carry blood away from the heart. They mostly deliver oxygenated blood from the heart to the tissues of the body. The only exception is the pulmonary artery, which carries deoxygenated blood from the heart to the lungs. So, the correct answer is option A.

  • Question 5
    1 / -0
    The autotrophic mode of nutrition requires
    Solution

    Correct Option: D
    Explanation:

    • The autotropic mode of nutrition is a process in which an organism produces its own food from raw materials.
    • The raw material for photosynthesis is water and carbon dioxide. 
    •  This process occurs in presence of sunlight, where chlorophyll which is a green-coloured pigment helps in the formation of oxygen and carbohydrate.
    • Hence, in the autotropic mode of nutrition, it requires all of the above.
  • Question 6
    1 / -0
    Coronary artery supplies blood to
    Solution
    The human heart is richly supplied with oxygen. A special coronary system of blood vessels is present in our body exclusively for the circulation of blood to and from the cardiac musculature. Coronary artery supplies blood to the heart.
  • Question 7
    1 / -0
    Human body loses water by
    Solution
    The human body loses water primarily by excreting it in urine from the kidneys. A fair amount of water is lost daily when water evaporates from the skin in form of sweating and some of it is breathed out by the lungs. 
  • Question 8
    1 / -0
    Digestion process starts in the ______.
  • Question 9
    1 / -0
    The largest artery in the human body is:
    Solution
    The aorta is the largest artery, in which the left ventricle pumps blood for distribution to the whole body. The aorta breaks into arteries and finally to a very fine structure known as arterioles.
    So, the correct answer is option D.
  • Question 10
    1 / -0
    The diffusion of water vapours through aerial parts of the plants is called as
    Solution
    Transpiration is defined as loss of water as gas or vapours from aerial parts, like leaves through the stomatal pore. It has the cooling effect on the plant leaves. It is called as a necessary evil as a lot of water absorbed by the roots is lost through transpiration. 
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