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Structural Organisation in Animals · Question 67

AIPMT 2011 (Prelims)MCQEasy📈 Topic in 62% papers+4−1
1

Which of the following is correctly stated as it happens in the common cockroach?

  1. Oxygen is transported by haemoglobin in blood
  2. The food is ground by mandibles and gizzard
  3. Nitrogenous excretory product is urea
  4. Malpighian tubules are excretory organs projecting out from the colon

Answer

(2) The food is ground by mandibles and gizzard

Solution

As per NCERT, in the cockroach the mandibles chew the food, and the gizzard (proventriculus), having an outer layer of thick circular muscles and a thick inner cuticle forming six chitinous plates called teeth, grinds the food particles.

⇒ Blood (haemolymph) is colourless and has no haemoglobin; oxygen reaches the tissues through tracheae.

⇒ Cockroach is uricotelic (excretes uric acid).

⇒ Malpighian tubules are present at the junction of the midgut and hindgut, not on the colon.

Answer: (2)

AIPMT 2011 (Prelims)

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2

The cells lining the blood vessels belong to the category of :

  1. Columnar epithelium
  2. Connective tissue
  3. Smooth muscle tissue
  4. Squamous epithelium
AIPMT 2010 (Prelims)
3

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
AIPMT 2009
4

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
5

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
6

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

  1. Cuboidal
  2. Glandular
  3. Ciliated
  4. Squamous
AIPMT 2009
7

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
8

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
9

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
10

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
11

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

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