Multiple Choice Questions

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Third cleavage of frog's development is

  • equatorial

  • vertical

  • latitudinal

  • none of these


C.

latitudinal

First and second cleavage in frog are holoblastic, complete, equal, vertical, whereas third cleavage is holoblastic, complete, unequal, latitudinal or horizontal and near the animal pole. It results in the formation of 8 cells of three are black micromeres which have less or no yolk, so divide faster and 4 are colourless macromeres


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Which of the following is a transparent tissue

  • Tendon

  • Hyaline cartilage

  • Fibrous cartilage

  • All of these


The scientist, who described the birds as glorified reptiles, was

  • Romer

  • Huxley

  •  Mendel

  • Robert Hooke


Which of the following assists in the locomotion of the organism stated

  • Epithelium of' Pheretima

  • Trichocysts of Paramecium

  • Pedicellaria of Star fish

  • Posterior sucker of Hirudinaria 


Blood calcium level can be increased by the administration of

  • glucagon

  • thyroxine

  • parathormone

  • caleitonin


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The first heart sound is produced when

  • diastole begins

  • semilunar valve close quickly

  • interventricular pressure decrease

  • bicuspid and tricuspid valve close quickly


Phospholipids are

  • amphipathic

  • hydrophobic

  • amphibolic

  • none of these


Which of the following is the part of mid brain of rabbit?

  • Diencephalon

  • Cerebrum

  • Corpora quadrigemina

  • None of the above


Which of the following is both exocrine and endocrine gland

  • Liver

  • Pancreas

  • Thyroid

  • Adrenal


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The epithelial lining in the alveoli of the frogs facing lung cavity is

  • squamous ciliated

  • columnar ciliated

  • columnar nonciliated

  • squamous nonciliated