Competitive Exams: Zoology MCQs (Practice-Test 23 of 112)

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1. Which one of the following pairs is not correctly matched?

   1. • Primatic layer of shell of Unio
      • Pearl formation
   2. • Obelia colony
      • Polymorphism
   3. • Eye of cockroach
      • Mosaic vision
   4. • Pedicellariae of starfish
      • Protecting dermal gills for smooth respiration

2. Peritrophic membrane is associated with a part of the digestive system in

   1. Ascaris

   2. Nereis

   3. Antedon

   4. Periplaneta

3. Glochidium and Veliger both are the larval forms of

   1. Pila

   2. Nereis

   3. Asterias

   4. Bivalves

4. Each leg of Periplaneta is divided into distinct limb segment. The correct order in which they are arranged from proximal to distal is

   1. tibia, tarsus, coxa, trochanter, femur

   2. femur, tarsus, trochanter, coxa, tibia

   3. tarsus, femur, tibia, trochanter, coxa

   4. coxa, trochanter, femur, tibia, tarsus

5. Match list I (Animals) with list II (Special features in their circulatory system) and select the correct answer:

   List-I	List-II
   Rana Calotes Columba Oryctolagus	Loss of the right aortic arch Carotid labyrinth Jugular anastamosis Ductus caroticus

   • A
   • B
   • C
   • D
   1. • 2
      • 1
      • 3
      • 4
   2. • 3
      • 4
      • 2
      • 1
   3. • 2
      • 4
      • 3
      • 1
   4. • 3
      • 1
      • 2
      • 4

6. In mammalian cochlea, the thin, walled sloping roof of the scala media is referred to as

   1. basilar membrane

   2. Reissner's membrane

   3. organ of Corti

   4. scala tympani

7. The teeth of saw in the sawfish are formed of

   1. modified fibrous connective tissue of dermis

   2. modified comified derivatives of the stratum germinativum

   3. placoid scales

   4. keratin layer

8. The cavity on the squamosal for the articulation of the lower jaw in mammals is known as

   1. fenestra

   2. alveolus

   3. acetabulum

   4. glenoid cavity

9. In Reptiles, the part of the cloaca receiving excretory and reproductive ducts is called

   1. coprodaeum

   2. urodaeum

   3. proctodaeum

   4. anus

10. Which one of the following pairs is not correctly matched?

    1. • Scale of shark
       • Dentine
    2. • Feathers of pigeon
       • Keratin
    3. • Beak of pigeon
       • Rhamphotheca
    4. • Hairs of rabbit
       • Collagen

11. Bursa Fabricius is a gland which is present

    1. in the urodaeum of cloaca and helps in digestion of adult birds

    2. near the fallopian tube and secretes a hormone for the maturation of ovum in adult mammals

    3. around the prostate gland of mammals and produces pheromones

    4. in young bird, is lymphatic in nature and produces antibodies

12. The channel running through the midbrain connecting 3rd and 4th ventricles in humans is known as

    1. neural tube

    2. paracoel

    3. brain stem

    4. aqueduct of silvius

13. β-oxidative enzymes bring about oxidation of

    1. sugars

    2. fatty acids

    3. amino acids

    4. polypeptides

14. The endogenous creatinine clearance may be measured to obtain

    1. renal plasma flow

    2. tubular secretion rate

    3. glomerular filtration rate

    4. osmotic pressure

15. The pressure exerted by electrolytes present in the extra-cellular fluid is called

    1. colloid osmotic pressure

    2. crystalloid osmotic pressure

    3. hydrostatic pressure

    4. tissue tension