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Plant and Animal Tissues Test - 7

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Plant and Animal Tissues Test - 7
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  • Question 1
    1 / -0

    Meristems are

    Solution

    A meristem is the tissue in most plants containing undifferentiated cells, found in zones of the plant, where growth can take place. Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem gives rise to organs like the leaves and flowers, while the root apical meristem provides the meristematic cells for the future root growth. 

    So, meristems are dividing cells and not permanent cells as, they differentiate to give various organs

    So, the correct answer is 'Dividing cells'.

  • Question 2
    1 / -0

    The Debove's membrane is defined as the

    Solution

    Debove's membrane is a delicate layer of connective tissue cells between the epithelium and basement tissue of respiratory and intestinal tissues.
    Thus, the correct answer is option (C), 'Layer of Connective tissue'.

  • Question 3
    1 / -0

    Intercalary meristem is defined as

    Solution

    Grasses have intercalary meristems located along the stems near the nodes. Cell divisions in this tissue push the stem upward.  So the correct option is 'primary meristem’. Apical meristems are also known as primary meristems because they give rise to the primary plant body. Plants, especially grasses, are the intercalary meristem. These cells possess the ability to divide and produce new cells, as do apical and lateral meristems.

  • Question 4
    1 / -0

    The layer that is present in between the bark and the wood is

    Solution

    Cambium is a kind of meristem which is most active in woody plants and it lies between the bark and wood of the stem. The vascular cambium forms tissues that carry water and nutrients throughout the plant. On the outer surface, the vascular cambium forms new layers of phloem, and on the inner surface, new layers of xylem. The cork cambium creates cells that eventually become bark on the outside and cells that add to the cortex on the inside. In woody plants, the cork cambium is part of the periderm. So, the correct answer is "both vascular and cork cambium".

  • Question 5
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    Which of the following tissue is accountable for fixing the tissue and filling the space inside organ?

    Solution
    Tendon is a tough fibrous connective tissue, which connects muscle to bone. Adipose tissue is a fat-storing tissue, which is present in between the skin and internal organs. Cartilage has widely spaced cells and interspersed in a matrix made of proteins and sugars. It covers the ends of bones at a joint. Areolar connective tissue is found in between skin and muscles, around blood vessels, nerves. It is also found in bone marrow. In this way, it fills the space inside the organ, supports the internal organ and also helps in tissue repair.
    So, the correct answer is option C
  • Question 6
    1 / -0

    Find the correct statement that is true regarding the concentration of xylem sap

    Solution

    It has been generally accepted that xylem transports water and minerals and phloem tissue transports prepared sugars. Hence, photosynthates like sugars will be present in phloem in higher concentration; consequently, xylem sap will be less concentrated and watery as compared to phloem sap.

    So, the correct answer is option B.

  • Question 7
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    Which of the following plants tissue plays a major role in overall growth and repair?

    Solution

    The apical meristem, also known as the "growing tip" is an undifferentiated meristematic tissue found in the buds and growing tips of roots in plants. Its main function is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

    So, the correct option is 'Meristematic tissue'.

  • Question 8
    1 / -0

    Assertion: Xylem transport is unidirectional.
    Reason: Phloem transport is bi-directional.

    Solution

    Water passage from root hair xylem and then to other parts is unidirectional (unidirectional upwards in xylem). The direction of movement of organic solutes in phloem can be upwards or downwards i.e., bi-directional.

  • Question 9
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    Which of the following helps Soil water to reach xylem element of the root?

    Solution

    Diffusion Pressure Deficit (DPD) is also called as suction pressure. In a system water moves along the DPD (or suction pressure) gradient. Water always moves from a region of lower DPD to a region of higher DPD. In a plant, water moves from soil to root hairs to the cortex to xylem to leaf mesophyll to the atmosphere. This journey of water occurs along the DPD gradient.

    So, the correct answer is option B.

  • Question 10
    1 / -0

    Tonsils in the pharynx are made up of 

    Solution

    Thick fibers of muscle and connective tissue attach the pharynx to the base of the skull. So the correct option is ' connective tissue'. The rostral part of the tonsil consists of a continuous layer of lymphoid cells separated from the respiratory epithelium by a thin layer of connective tissue. The prominent pharyngeal tonsil is located dorsally in the nasopharynx on the caudal part of the pharyngeal septum.

  • Question 11
    1 / -0

    The Dermis of the mammalian skin comprises of

    Solution

    Dermis or corium is the inner part of skin mainly composed of connective tissue. It is mesodermal in origin. Dermis is derived embryologically from dermatome. Dermis is 2 to 3 times thicker than epidermis. In the structure of dermis there are two parts -
    (1) Outer part: Pars papillaris.
    (2) Inner part: Pars reticularis.

  • Question 12
    1 / -0

    In which of the following Collenchymatous tissue is seen?

    Solution

    Collenchymas cell walls are thickened due to deposition of pectin. Collenchyma is the primary supporting tissue in stems, leaves and floral parts of dicots. Hence, climbing plants have collenchyma, which provides support during climbing.

  • Question 13
    1 / -0

    What helps in moving the Minerals that are absorbed by the roots, to the leaf?

    Solution

    Phloem and sieve tubes are responsible for translocation of sugars in the plant. They are living cells. Movement of water and minerals is a physical process and does not require living cells. Xylem cells are nonliving and transport of water and minerals is a physical process, not a physiological process. Salts and water are transported through xylem tissue in vascular plants. These are composed of vessels, tracheids, parenchyma, and fibers.

    So, the correct answer is option A.

  • Question 14
    1 / -0

    Wilting in plant is observed when

    Solution

    In vascular plants, water and minerals are transported through xylem tissue, whereas sugars are translocated through phloem tissue. If xylem is blocked the aerial parts of the plant will not get sufficient water and the plant will show wilting.

    So, the correct answer is option A.

  • Question 15
    1 / -0

    The transportation of water in plants is related to

    Solution

    The plants have two main types of tissue for the movement of water, minerals and organic products. They are the xylem and phloem. While phloem is responsible for transport of organic products required for photosynthesis, the xylem transports water and minerals from the soil to the parts of the plants.

    Therefore, the correct answer is option B.

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