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NEET-XI-Biology

07: Structural Organisation in Animals

 page 4

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  • #10-b
    RBC; WBC; platelets; cartilage
    Ans : RBCs, WBCs, and platelets are the three most important components of blood. Cartilage is therefore, the odd one out.
  • #10-c
    Exocrine; endocrine; salivary gland; ligament
    Ans : Exocrine, endocrine, and salivary glands are examples of simple glandular epithelium. Ligament is a connective tissue.
  • #10-d
    Maxilla; mandible; labrum; antennae
    Ans : Maxilla, mandible, and labrum are mouthparts of a cockroach. Antennae, on the other hand, are present in the head region of cockroaches.
  • #10-e
    Protonema; mesothorax; metathorax; coxa
    Ans : Protonema forms the developmental stage in the life cycle of a moss. Mesothorax, metathorax, and coxa are parts or segments present in the legs of a cockroach.
  • Qstn #11
    Match the terms in column I with those in column II:




    Column I
    		 Column II
    (a) Compound epithelium(b) Compound eye(c) Septal nephridia(d) Open circulatory system(e) Typhlosole

    (f) Osteocytes

    (g) Genitalia
    		 (i) Alimentry canal

    (ii) Cockroach

    (iii) Skin

    (iv) Mosaic vision

    (v) Earthworm

    (vi) Phallomere

    (vii) Bone
    Ans :


    Column I
    		 Column II
    (a) Compound epithelium(b) Compound eye(c) Septal nephridia(d) Open circulatory system(e) Typhlosole

    (f) Osteocytes

    (g) Genitalia
    		 (iii) Skin

    (iv) Mosaic vision

    (v) Earthworm

    (ii) Cockroach

    (i) Alimentary canal

    (vii) Bone

    (vi) Phallomere
  • Qstn #12
    Mention briefly about the circulatory system of earthworm
    Ans : Earthworms (Pheretima) have closed blood vascular systems, which consists of the heart, blood vessels, and capillaries. The heart pumps blood for circulating it in one direction. Blood is supplied by smaller blood cells to the gut nerve cord and the body wall. Blood glands are present in the 4th, 5th, and 6th segments, which produce blood cells and haemoglobin dissolved in blood plasma. Blood cells in earthworms are phagocytic in nature.
  • Qstn #13
    Draw a neat diagram of digestive system of frog.
    Ans :
  • Qstn #14
    Mention the function of the following
  • #14-a
    Ureters in frog
    Ans : Ureters in frogs: A ureter acts as a urinogenital duct, which carries sperms along with urine in male frogs.
  • #14-b
    Malpighian tubules
    Ans : Malphigian tubules: Malphigian tubules are excretory organs in cockroaches.
  • #14-c
    Body wall in earthworm
    Ans : Body wall in earthworms: In earthworms, the body wall consists of muscle layers. It helps in movement and burrowing.
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