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Structural Organisation in Animals · Question 73

AIPMT 2009MCQEasy📈 Topic in 38% papers+4−1
1

The cell junctions called tight, adhering and gap junctions are found in :

  1. Connective tissue
  2. Neural tissue
  3. Epithelial tissue
  4. Muscular tissue

Answer

(3) Epithelial tissue

Solution

As per NCERT, all cells in epithelium are held together with little intercellular material, and in nearly all animal tissues specialised junctions provide structural and functional links between cells.

⇒ Three types of cell junctions are found in the epithelium and other tissues: tight, adhering and gap junctions.

∵ Tight junctions stop substances from leaking across a tissue, adhering junctions cement neighbouring cells together and gap junctions connect the cytoplasm of adjoining cells.

∴ These junctions are described for epithelial tissue.

Answer: (3)

AIPMT 2009

Keep practising — Structural Organisation in Animals

2

The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in -

  1. vertebrae
  2. tip of the nose
  3. ear ossicles
  4. nails
AIPMT 2009
3

Earthworms have no skeleton but during burrowing the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to:

  1. coelomic fluid
  2. gut peristalsis
  3. blood
  4. setae
AIPMT 2008
4

Which one of the following is the true description about an animal concerned?

  1. Frog — Body divisible into three regions-head, neck and trunk
  2. Rat — Left kidney is slightly higher in position than the right one
  3. Earthworm — The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
  4. Cockroach — 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
AIPMT 2008
5

In which one of the following preparations are you likely to come across cell junctions most frequently?

  1. Thrombocytes
  2. Tendon
  3. Hyaline cartilage
  4. Ciliated epithelium
AIPMT 2007
6

Bowman's glands are found in

  1. juxtamedullary nephrons
  2. olfactory epithelium
  3. external auditory canal
  4. cortical nephrons only
AIPMT 2006
7

Areolar connective tissue joins-

  1. Bones with muscles
  2. Bones with bones
  3. Fat body with muscles
  4. Integument with muscles
AIPMT 2006
8

Mast cells secrete-

  1. Histamine
  2. Hippurin
  3. Haemoglobin
  4. Myoglobin
AIPMT 2006
9

Mast cells of connective tissue contain -

  1. Heparin and calcitonin
  2. Heparin and histamine
  3. Vasopressin and relaxin
  4. Serotonin and melanin
AIPMT 2004
10

Ommatidia serve the purpose of photoreception in

  1. cockroach
  2. frog
  3. humans
  4. sunflower.
AIPMT 2003
11

Which one of the following contains the largest quantity of extracellular material ?

  1. Stratified epithelium
  2. Myelinated nerve fibres
  3. Striated muscle
  4. Areolar tissue
AIPMT 2003

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