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CBSE-IX-Science

13: 2-Tissues

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  • #
    Science Tissues part 2
  • Qstn #1
    Define the term “tissue”.
    Ans : It is a group of cells similar in origin and structure and they are specialized to perform a particular function like muscle cells in our body form the muscle tissue that bring about body movements(specific function).
  • Qstn #2
    How many types of elements together make up the xylem tissue? Name them.
    Ans : Xylem tissue is made up of following 4 types of elements:

    i) Tracheids

    ii) vessels

    iii) fibres

    iv) parenchyma
  • Qstn #3
    How are simple tissues different from complex tissues in plants?
    Ans :
  • Qstn #4
    Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.
    Ans :
  • Qstn #5
    What are the functions of the stomata?
    Ans : The functions of stomata are:

    i) gaseous exchange like exchange of.

    ii) Process of transpiration i.e. loss of excess water in the form of water vapour occurs through stomata.
  • Qstn #6
    Diagrammatically show the difference between the three types of muscle fibres.
    Ans :
  • Qstn #7
    What is the specific function of the cardiac muscle?
    Ans : Cardiac muscles are the muscles of heart that pumps blood to all parts of body and the pumping needs rhythmic contraction and relaxation of cardiac muscles throughout the life without any fatigue.
  • Qstn #8
    Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.
    Ans :
  • Qstn #9
    Draw a labelled diagram of a neuron.
    Ans : http://brainyinfo.com/home/wp-content/uploads/2011/01/Neuron.gif
  • #10-a
    Tissue that forms the inner lining of our mouth.
    Ans : epithelial tissue
  • #10-b
    Tissue that connects muscle to bone in humans.
    Ans : tendons
  • #10-c
    Tissue that transports food in plants.
    Ans : phloem
  • #10-d
    Tissue that stores fat in our body.
    Ans : adipose tissue
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