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Animal Kingdom · Question 105

AIPMT 2005MCQEasy📈 Topic in 62% papers+4−1
1

Which one of the following characters is not typical of the class Mammalia?

  1. Thecodont dentition
  2. Alveolar lungs
  3. Ten pairs of cranial nerves
  4. Seven cervical vertebrae

Answer

(3) Ten pairs of cranial nerves

Solution

Mammals have thecodont teeth (set in jaw sockets), alveolar lungs and, almost always, seven cervical vertebrae.

⇒ Mammals (like reptiles and birds) have twelve pairs of cranial nerves.

⇒ Ten pairs of cranial nerves are found in fishes and amphibians.

∴ 'Ten pairs of cranial nerves' is not typical of mammals.

Answer: (3)

AIPMT 2005

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2

In Arthropoda, head and thorax are often fused to form cephalothorax, but in which one of the following classes, is the body divided into head, thorax and abdomen?

  1. Insecta
  2. Myriapoda
  3. Crustacea
  4. Arachnida and Crustacea
AIPMT 2004
3

The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the Phylum

  1. Annelida
  2. Mollusca
  3. Cnidaria
  4. Echinodermata
AIPMT 2004
4

One of the following is a very unique feature of the mammalian body

  1. homeothermy
  2. presence of diaphragm
  3. four chambered heart
  4. rib cage
AIPMT 2004
5

Sycon belongs to a group of animals, which are best described as

  1. unicellular or acellular
  2. multicellular without any tissue organization
  3. multicellular with a gastrovascular system
  4. multicellular having tissue organization, but no body cavity.
AIPMT 2003
6

During the life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

  1. redia and miracidium
  2. cercaria and redia
  3. metacercaria and cercaria
  4. miracidium and metacercaria
AIPMT 2003
7

Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?

  1. Pheretima – Sexual dimorphism
  2. Musca – Complete metamorphosis
  3. Chameleon – Mimicry
  4. Taenia – Polymorphism
AIPMT 2003
8

In which of the following animals nerve cell is present but brain is absent?

  1. Sponge
  2. Earthworm
  3. Cockroach
  4. Hydra
AIPMT 2002
9

In which of the following, notochord is present in embryonic stage?

  1. All chordates
  2. Some chordates
  3. Vertebrates
  4. Non-chordates
AIPMT 2002
10

In which of the following animals, haemocyanin pigment is found?

  1. Annelida
  2. Echinodermata
  3. Insecta
  4. Mollusca
AIPMT 2001
11

In which of the following animals post-anal tail is found?

  1. Earthworm
  2. Lower invertebrates
  3. Scorpion
  4. Snake
AIPMT 2001

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