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Structural Organisation in Animals · Question 69

AIPMT 2009MCQEasy📈 Topic in 0% papers+4−1
1

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

  1. coelomic fluid
  2. haemolymph
  3. slimy mucus
  4. excretory fluid

Answer

(1) coelomic fluid

Solution

The earthworm is a true coelomate (annelid); its body wall encloses a fluid-filled coelom around the gut.

⇒ A needle that pierces the body wall without damaging the gut enters the coelom, so coelomic fluid oozes out.

∵ Haemolymph is the blood of arthropods (open circulation), whereas the earthworm has a closed circulatory system,

∴ the fluid is coelomic fluid.

Answer: (1)

AIPMT 2009

Keep practising — Structural Organisation in Animals

2

Which one of the following correctly describes the location of some body parts in the earthworm Pheretima?

  1. Two pairs of testes in 10th and 11th segments.
  2. One pair of ovaries attached at intersegmental septum of 14th and 15th segments.
  3. Two pairs of accessory glands in 16–18 segments
  4. Four pairs of spermathecae in 4–7 segments
AIPMT 2009
3

Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

  1. Biceps of upper arm – smooth muscle fibres
  2. Iris – Involuntary smooth muscle
  3. Abdominal wall – smooth muscle
  4. Heart wall – Involuntary unstriated muscle
AIPMT 2009
4

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is :

  1. Cuboidal
  2. Glandular
  3. Ciliated
  4. Squamous
AIPMT 2009
5

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

  1. Connective tissue
  2. Neural tissue
  3. Epithelial tissue
  4. Muscular tissue
AIPMT 2009
6

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
7

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
8

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
9

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
10

Bowman's glands are found in

  1. juxtamedullary nephrons
  2. olfactory epithelium
  3. external auditory canal
  4. cortical nephrons only
AIPMT 2006
11

Areolar connective tissue joins-

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

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