Biology Today - February 2018

(Michael S) #1
(a) Marrow cavity has yellow marrow.
(b) It is found at the epiphysis of long bones.
(c) Lamellae are arranged as interlacing network.
(d) It produces erythrocytes and granular leucocytes.


  1. Select the correct statements about transitional epithelium.
    (i) It is always ciliated.
    (ii) It is a compound epithelium.
    (iii) It is capable of stretching.
    (iv) It has a basement membrane.
    (a) (i) and (iii) (b) (ii) and (iii)
    (c) (i), (iii) and (iv) (d) (i), (ii) and (iii)

  2. Match the column I with column II and select the correct
    option.
    Column I Column II
    Type of bone Example
    A. Sesamoid bones (i) os penis in bats
    B. Membrane bones (ii) Knee-cap
    C. Replacing bones (iii) Parietals of the skull
    D. Visceral bones (iv) Humerus
    (a) A-(iv); B-(iii); C-(i); D-(ii)
    (b) A-(ii); B-(iii); C-(iv); D-(i)
    (c) A-(iii); B-(ii); C-(iv); D-(i)
    (d) A-(ii); B-(iii); C-(i); D-(iv)

  3. Identify the correct statement among the following.
    (a) The concentration of glucose is higher in blood as
    compared to lymph.
    (b) Reticular connective tissue forms defence mechanism
    of the body.
    (c) Eosinophils are the most numerous of all leucocytes
    present in body.
    (d) White fibrous connective tissue consists of mainly actin
    fibers.

  4. Whartson’s jelly, a jelly like substance is the most conspicuous
    component of
    (a) pigmented connective tissue
    (b) mucoid connective tissue
    (c) reticular connective tissue
    (d) areolar connective tissue.

  5. Excess of red blood corpuscles are stored in the
    (a) liver (b) pancreas
    (c) spleen (d) thymus.


Exam Section



  1. The figure shows different human tissues labelled as A to D.
    Which option gives the correct identification of the label, its
    location and one feature?


ABCD


(a) D-Unicellular glandular epithelium, goblet cells, secrete
saliva
(b) B-Squamous epithelium, walls of blood vessels, form a
diffusion boundary
(c) A-Cuboidal epithelium, ducts of glands, secretion and
absorption
(d) C-Columnar epithelium, lining of stomach, secretion
and absorption $,,06


  1. Which type of tissue correctly matches with its location?
    Tissue Location
    (a) Transitional epithelium Tip of nose
    (b) Cuboidal epithelium Lining of stomach
    (c) Smooth muscle Wall of intestine
    (d) Areolar tissue Tendons
    1((73KDVH,

  2. Assertion : Gap junctions perform cementing function to
    keep the neighbouring cells together.
    Reason : Tight junctions facilitate the cells to communicate
    with each other by connecting the cytoplasm of adjoining
    cells, for rapid transfer of ions, small and big molecules, etc.
    (a) If both assertion and reason are true and reason is the
    correct explanation of assertion.
    (b) If both assertion and reason are true but reason is not
    the correct explanation of assertion.
    (c) If assertion is true but reason is false.
    (d) If both assertion and reason are false. $,,06

  3. Most of the cartilages in vertebrate embryo are replaced in
    adult by
    (a) blood (b) bones
    (c) tendons (d) ligaments
    (e) muscle.  .HUDOD307

  4. Osteoid refers to
    (a) the smallest bone of the body
    (b) young hyaline matrix of true bone in which calcium
    salts are deposited
    (c) membranous ossification of cranium
    (d) the largest bone of the body. :%-((

  5. Choose the correctly matched pair.
    (a) Inner lining of salivary ducts - Ciliated epithelium
    (b) Moist surface of buccal cavity - Glandular epithelium
    (c) Tubular parts of nephrons - Cuboidal epithelium
    (d) Inner surface of bronchioles - Squamous epithelium
    $,307

  6. Read the following statements and choose the correct answer.

    1. Drupe Pg. 16

    2. Partial regulator Pg. 62

    3. Juglone Pg. 64




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