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Structural Organisation in Animals · Question 77

AIPMT 2007MCQEasy📈 Topic in 38% papers+4−1
1

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

Answer

(4) Ciliated epithelium

Solution

As per NCERT, all cells in epithelium are held together with little intercellular material, and nearly all animal tissues have specialised junctions (tight, adhering and gap junctions) which provide structural and functional links between individual cells.

⇒ Thrombocytes are cell fragments floating in plasma; tendon and hyaline cartilage are connective tissues whose cells lie scattered in an abundant matrix.

∴ Cell junctions are seen most frequently in an epithelium, i.e. ciliated epithelium.

Answer: (4)

AIPMT 2007

Keep practising — Structural Organisation in Animals

2

Bowman's glands are found in

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

Areolar connective tissue joins-

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

Mast cells secrete-

  1. Histamine
  2. Hippurin
  3. Haemoglobin
  4. Myoglobin
AIPMT 2006
5

Mast cells of connective tissue contain -

  1. Heparin and calcitonin
  2. Heparin and histamine
  3. Vasopressin and relaxin
  4. Serotonin and melanin
AIPMT 2004
6

Ommatidia serve the purpose of photoreception in

  1. cockroach
  2. frog
  3. humans
  4. sunflower.
AIPMT 2003
7

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
8

Which cartilage is present at the end of long bones?

  1. Calcified cartilage
  2. Hyaline cartilage
  3. Elastic cartilage
  4. Fibrous cartilage
AIPMT 2002
9

Melanin protects from:

  1. Infrared rays
  2. U.V. rays
  3. Visible rays
  4. X-rays
AIPMT 2002
10

During an injury, the nasal septum gets damaged. For its recovery, which cartilage is preferred?

  1. Fibrous cartilage
  2. Elastic cartilage
  3. Calcified cartilage
  4. Hyaline cartilage
AIPMT 2001
11

Which cells do not form a layer and remain structurally separate?

  1. Nerve cells
  2. Epithelial cells
  3. Gland cells
  4. Muscle cells
AIPMT 2001

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