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Tissues Test - 3

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Tissues Test - 3
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  • Question 1
    1 / -0
    Read the following:

    A. Nerve cells do not have the ability of regeneration.
    B. Nerve cells are one kind of muscle tissue.
    C. No two nerve cells have same appearance.
    D. Nervous tissue is a fluid tissue.

    Which of the above statements are true?
    Solution
    Neurons - the nerve cells that make up the brain and nervous system, look different from all other cells in the body and from one another. All nerve cells have recognisable shapes, but no two look exactly alike. Nerve cells, once damaged, cannot be regenerated as they have lost the power of regeneration.
  • Question 2
    1 / -0
    Navya observed one slide through the microscope. In it, almost the entire cell space was occupied by the vacuole.

    What would it be?
    Solution
    The central vacuole is a cellular organelle found in plant cells. It functions to hold materials and wastes. It also functions to maintain the proper pressure within the plant cells to provide structure and support for the growing plant.
  • Question 3
    1 / -0
    Which of the following are the characteristic features of cells of meristematic tissues?
    Solution
    Meristematic tissue has a number of defining features, including small cells, thin cell walls, large cell nuclei, absent or small vacuoles, and no intercellular spaces. Meristematic cells divide frequently and give rise to new cells and hence they need dense cytoplasm, large nuclei and thin cell wall. Vacuoles causes hindrance in cell division as it is full of cell sap to provide turgidity and rigidity to the cell. Also vacuoles basically serve the purpose of storing of nutrients, excess salts etc. Meristematic cells do not need to store these nutrients as they have compact shape.
  • Question 4
    1 / -0
    _____ smoothens bone surface at points and is also present in the nose, ear, trachea and larynx.
    Solution
    Cartilage is a resilient and smooth elastic tissue, rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs and many other body components.
  • Question 5
    1 / -0
    Intercalary meristem is present
    Solution
    Meristems are classified by their location in the plant as apical (located at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases).
  • Question 6
    1 / -0
    Glands are modified form of
    Solution
    Glands, derived from the invagination and ingrowths of lining epithelia into underlying connective tissue, are composed mainly of epithelial cells in adults and are considered a type of epithelial tissue.
  • Question 7
    1 / -0
    Which of the following statements is correct about tendons?
    Solution
    A tendon (or sinew) is a tough band of fibrous connective tissue that connects muscle to bone or muscle to muscle and is designed to withstand tension. Tendons and muscles work together and can only exert a pulling force.
  • Question 8
    1 / -0
    Directions: Choose the correct alternative from the following options.

    A: Sclerenchymatous tissues have thick cell walls.
    R: Sclerenchymatous tissues' cell wall has deposition of suberin.
    Solution
    Sclerenchyma tissue, when mature, is composed of dead cells that have heavily thickened walls containing lignin and a high cellulose content (60%–80%), and serves the function of providing structural support in plants. Sclerenchyma cells possess two types of cell walls: primary and secondary walls.
  • Question 9
    1 / -0
    Which of the following are characterised by excitability and irritability?

    a. Muscle fibre
    b. Cartilages
    c. Nerve fibre
    d. Ciliated epithelium
    Solution
    Nerve and muscle fibres are characterised by excitability and irritability. They work in association with each other and respond to stimuli equally.
  • Question 10
    1 / -0
    Which of the following tissues fills the space inside the organs?
    Solution
    Areolar connective tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. It fills the space inside the organs.
  • Question 11
    1 / -0
    We can easily bend soft twigs of a tree due to the presence of
    Solution
    Twigs contain tissues that have moderate strength. Collenchyma has thickenings only on the cell wall regions adjoining other cells; hence, it can bend by giving support to the developing twig.
    Parenchyma is very delicate and is not able to support twigs.
    Xylem and phloem are conducting tissues. Phloem has minimal role in giving strength to plant parts, while xylem can make the bending very difficult, if it is mature and thick.
  • Question 12
    1 / -0
    Which of the following tissues is responsible for the growth of the girth of stems?
    Solution
    Apical meristem helps in the growth of plant tips (i.e. length).
    Lateral meristem is responsible for horizontal growth, i.e. increase in the girth of stems.
    Collenchyma and chlorenchyma are not associated with growth.
  • Question 13
    1 / -0
    The matrix of cartilages is composed of:

    a. Proteins
    b. Sugars
    c. Fats
    d. Calcium
    Solution
    The matrix of cartilages is composed of proteins and sugars.
  • Question 14
    1 / -0
    Where is ciliated columnar epithelium located?
    Solution
    In the upper respiratory tract, the columnar epithelial tissue also has cilia, which are hair-like projections on the outer surfaces of epithelial cells. These cilia can move and their movement pushes the mucus forward to clear it. This type of epithelium is called ciliated columnar epithelium.
  • Question 15
    1 / -0
    Which of the following statements is incorrect?
    Solution
    Involuntary muscles are found in iris of the eye, in uterus and in bronchi of the lungs. The movement of food in the alimentary canal, and the contraction and relaxation of blood vessels are involuntary movements.
  • Question 16
    1 / -0
    Read the following statements:

    A. It forms a thick, tough barrier and protects the underlying tissues in the skin.
    B. When it is present in sense organs, it contains receptor cells.
    C. It also helps in absorption of nutrients.
    D. When it is present in glands, it helps in secretion.

    Which one of the following represents the above mentioned characteristics?
    Solution
    Epithelial tissues line the cavities, and surfaces of blood vessels and organs throughout the body. All glands are made up of epithelial cells. Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport and sensing.
  • Question 17
    1 / -0
    Match Column - I with Column - II, and identify the correct answer.

    Column - I
    		 Column - II
    A. Thrombocytes
    		 I. Phagocytosis
    B. Neutrophils
    		 II. Releases chemicals
    C. Erythrocytes
    		 III. Produces antibodies
    D. Lymphocytes
    		 IV. Clotting of blood

    		 V. Supply of oxygen
    Solution
    Thrombocytes are the cells responsible for blood clotting. Neutrophils are phagocytes capable of ingesting microbes and particles. The main function of red blood cells is to carry oxygen to different parts of the cell. Lymphocytes are a type of white blood cells that produce antibodies.
  • Question 18
    1 / -0
    In a neuron, conversion of electrical signal to a chemical signal occurs at/in
    Solution
    In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron. The axon terminal contains the synaptic vesicles that have neurotransmitters stored in them. These neurotransmitters when released bind to the receptors on the dendritic surface.
  • Question 19
    1 / -0
    Most of the human neurons are
    Solution
    A multipolar neuron has a single axon and many dendrites. The maximum neurons of CNS are of this type.
  • Question 20
    1 / -0
    This cartilage has the highest number of chondrocytes and therefore bends the most. It is found in the mammalian pinna. The cartilage is known as
    Solution
    Elastic cartilage is a flexible cartilage so that it can withstand repeated bending. This cartilage is found in the outer ear or pinna. Elastic cartilage has the highest number of chondrocytes, so it bends the most.
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