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Tissues Test - 66

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Tissues Test - 66
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  • Question 1
    1 / -0
    Which of the following epithelial tissues is found in alveoli of lungs?
    Solution
    The walls of the alveoli are lined with simple squamous epithelial cells known as alveolar cells. This single layer of squamous cells is ideal for the diffusion of gases in the lungs. The cells are characterized by the presence of a compactly arranged cells with single nucleus placed on the basement membrane.
    Thus, the correct answer is option A.
  • Question 2
    1 / -0
    Which of the following labelled parts in the figure given receives nerve impulses from other neurons?

    Solution
    • Neuron or nerve cells are the functional units of the nervous system. Each neuron has a cell body that encloses the nucleus and cytoplasm. 
    • A number of processes arise from the cell body. These processes are called dendrites. In the given diagram P represents the dendrites. Dendrites play an important role in receiving nerve impulses from other neurons. 
    • The cell body is the spherical part of the neuron that contains the nucleus and connects to the dendrites, which bring information into the neuron, and the axon, which sends information to other neurons.
    • Myelin sheaths are sleeves of fatty tissue that protect the nerve cells. 
    • The myelin sheath is regularly interrupted along the length of the axon by specialized regions called the nodes of Ranvier, which are necessary for the propagation of an action potential along the axon. The nodes of Ranvier are essential in the speed and timing of the delivery of impulses from one neuron to another.
    Thus, the correct answer is option A. 
  • Question 3
    1 / -0
    Which of the following carries carbon dioxide during exhalation?
    I. Plasma
    II. Erythrocytes
    III. Haemoglobin molecules
    Solution
    Carbon dioxide (CO$${_2}$$) is carried in human body in 3 different ways:- (i) CO$${_2}$$ is highly soluble in the blood. So it remains dissolved in the plasma. (ii) CO$${_2}$$ remains attached to the haemoglobin and forms a reversible compound called carbamino-haemoglobin. (iii) CO$${_2}$$enters into erythrocytes, gets converted into carbonic acid by carbonic anhydrase and finally into bicarbonate ions.
    Hence the correct option is D.
  • Question 4
    1 / -0
    Which of the following muscle tissue is long, cylindrical and voluntary?
    Solution
    In the human body, muscles that are under the control of the will of the individual are said to be voluntary muscles. They are attached to the skeleton with the help of tendons and are called skeletal muscles. These muscles show striations and are also called striated muscles. They are cylindrical and multinucleated.
    Thus the correct answer is option A.

  • Question 5
    1 / -0
    In chordates, which of the following helps in locomotion?
    Solution
    Paired muscles attached to an endoskeleton helps in locomotion in chordates. They are capable of locomotion by means of muscular movements. Eg. the biceps and triceps bring about the movement of the upper arm.
    Thus, the correct answer is option C.
  • Question 6
    1 / -0
    Which of the following tissues include bones and cartilage?
    Solution
    • In the human body, the connective tissue is widely distributed. This tissue supports and connects the various body parts.  
    • Bones are the major connective tissue that supports the entire body and protects the organs. 
    • They are connected to each other by ligaments. Cartilage is present at the ends of the long bones which prevent the friction between the bones during movements. 
      Thus the correct answer is option D.
  • Question 7
    1 / -0
    Study the diagram given below and identify the cells labelled as A, B, C and D, and choose the correct option.

    Solution
    • The diagram shows the different types of blood cells.
    • The label A refers to eosinophils. The nucleus of these cells is bilobed. They are involved in allergic and inflammatory reactions.
    • The label B refers to monocytes. They have a kidney-shaped nucleus.
    • The label C refers to neutrophils. They have a multilobed nucleus. the monocytes and neutrophils are involved in phagocytosis. The label D refers to lymphocyte. They have a large circular nucleus. They form the immune T cells and B cells. 
    Thus, the correct answer is option D. 
  • Question 8
    1 / -0
    Which of the following statements is true about red blood cells?
    Solution
    Erythrocytes (RBCs) are circular, biconcave, non-nucleated cells. The cytoplasm of RBCs contains the respiratory pigment called haemoglobin which helps in the transport of oxygen. It does not protect us from any disease. White blood cells present in the blood help to protect us from the disease.
    So, the correct answer is option D.
  • Question 9
    1 / -0
    Which of the following statements about red blood cells in human is/are true?
    Solution
    • The bone marrow produces the cellular elements of the blood, including platelets, red blood cells, and white blood cells. Red blood cells are released from bone marrow as matured RBC. 
    • They lack a nucleus and other cell organelles, like mitochondria, at maturity.  
    • When matured, in a healthy individual these cells live in blood circulation for about 100 to 120 days. At the end of their lifespan, they become senescent and are removed from circulation.
    in diameter. 
    So, the correct answer is option D.
  • Question 10
    1 / -0
    Which of the following connects bones and muscles?
    Solution
    • A tendon is a band of connective tissue that connects muscle to bone. The tendons and muscles work together to control joint movement. It is strong and can resist stress. 
    • A ligament connects a bone to another bone, usually at the joints. 
    • Collagen is the fibrous protein present in our body. It is the building material of certain tissues such as tendons. 
    • Cartilage is soft, gel-like padding between bones that protects joints and facilitates movement.

    So, the correct answer is option A.
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