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Tissues Test - 61

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Tissues Test - 61
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  • Question 1
    1 / -0
    Which of the following is correct with respect to adipose tissue?
    Solution
    • Adipose tissue is a type of connective tissue. 
    • It stores fat. It is found below the skin and between internal organs. 
    • The cells of this tissue are filled with fat globules. The storage of fats and it is also act as an insulator.
    So, the correct answer is option D.
  • Question 2
    1 / -0
     Tissue is formed by a combination of 
    Solution
    A tissue is a group of cells of common origin which are structurally similar and perform a particular function. Organ is a group of tissues and organ system is a group of organs.
    Therefore, the correct answer is option C.
  • Question 3
    1 / -0
    Identify the labels of the diagram.

    Solution
    1 - Nucleus, 2 - Dendrite, 3 - Cell body, 4 - Axon, 5 - Nerve ending
    The nucleus is present in the main cell body. Dendrites are the projections of cell body that receive messages from other neurons and passes them to the cell body. Axon is the long extension of the nerve cell that transmits nerve impulses from the cell body to other neurons. At the end of the axon (nerve ending), the l impulse sets off the release of some chemicals. These chemicals cross the gap, or synapse, and start a similar electrical impulse in a dendrite of the next neuron.

  • Question 4
    1 / -0
    Epidermis protects the plant against loss of
    Solution
    The epidermis is the outermost cellular layer which covers the whole plant structure, i.e., it covers roots, stem, leaves, flowers and fruit. It is composed of a single layer of living cells, although there are exceptions.
    Function:
    1) The epidermal cells protect the underlying cells.
    2) The waxy cuticle prevents the loss of moisture from the leaves and stems.
    3) The transparent epidermal cells allow sunlight (for photosynthesis) to pass through to the chloroplasts in the mesophyll tissue.
    4) The stomata of leaves and stems allow gaseous exchange to take place which is necessary for photosynthesis and respiration.
    5) Water vapour may be given off through the stomata during transpiration.
    6) The root hairs absorb water and dissolved ions from the soil.
    Hence the correct option is D.
  • Question 5
    1 / -0
    In beet _____ tissue stores food. 
    Solution
    Parenchyma is the basic packing tissue. In some plants like Beet, they are modified to store food.
    Hence the correct option is A.
  • Question 6
    1 / -0
    Small pores on the epidermis of leaf are called:
    Solution
    The epidermis is the outermost covering of the cell and it is composed of living cells. The epidermis is usually closely packed, without intercellular spaces or chloroplasts. The outer walls are exposed to the atmosphere and usually thickened, and may be covered by a waxy, waterproof cuticle. Apart from the normal epidermal cells, there are also stomata in the epidermis of leaves and stems. A stoma is an opening (pore) that is bounded by two bean-shaped cells called guard cells. They help in the gaseous exchange and release of water in the form of water vapour.
    Hence, the correct option is A.
  • Question 7
    1 / -0
    Which epithelial cells cover the lining of mouth and oesophagus?
    Solution
    Simple squamous cells have the appearance of thin, flat plates. The shape of the nucleus usually corresponds to the cell form and help to identify the type of epithelium. Squamous cells, for example, tend to have horizontally flattened, elliptical nuclei because of the thin flattened form of the cell. They form the lining of cavities such as the mouth, blood vessels, heart and lungs and make up the outer layers of the skin.
    Therefore, the correct answer is option C.
  • Question 8
    1 / -0
    Simple squamous cells are also known as
    Solution
    Simple squamous cells are flat with flattened/rounded nucleus. It is also called as pavement epithelium due to its tile-like appearance. 
    Hence the correct option is B.

  • Question 9
    1 / -0
    .......... connective tissue is found in between the skin and muscles.
    Solution
    Areolar tissue is a connective tissue that fills the gap between the internal organs and supports them. It is found between skin and muscles. It is also found around blood vessels and nerves too. It also helps in tissue repair and in providing a supportive framework.
    So, the correct answer is option C.
  • Question 10
    1 / -0
    The epidermal cells provide ............ to the plants.
    Solution
    The epidermis is the outermost cellular layer which covers the whole plant structure, i.e., it covers roots, stem, leaves, flowers and fruit. It is composed of a single layer of living cells, although there are exceptions. The function of epidermal cells are as follows-
    1) The epidermal cells protect the underlying cells.
    2) The waxy cuticle prevents the loss of moisture from the leaves and stems.
    3) The transparent epidermal cells allow sunlight (for photosynthesis) to pass through to the chloroplasts in the mesophyll tissue.
    4) The stomata of leaves and stems allow gaseous exchange to take place which is necessary for photosynthesis and respiration.
    5) Water vapor may be given off through the stomata during transpiration.
    6) The root-hairs absorb water and dissolved ions from the soil.
    Hence the correct option is B.
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