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Animal Kingdom · Question 106

AIPMT 2004MCQEasy📈 Topic in 12% papers+4−1
1

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

Answer

(1) Insecta

Solution

In Crustacea (e.g. prawn) and Arachnida (e.g. scorpion, spider), the head and thorax are fused into a cephalothorax.

Myriapoda have a head and a long trunk of many similar segments.

∴ Only in Insecta (e.g. cockroach) is the body distinctly divided into head, thorax and abdomen.

Answer: (1)

AIPMT 2004

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2

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
3

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
4

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
5

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
6

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
7

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

  1. Sponge
  2. Earthworm
  3. Cockroach
  4. Hydra
AIPMT 2002
8

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

  1. All chordates
  2. Some chordates
  3. Vertebrates
  4. Non-chordates
AIPMT 2002
9

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

  1. Annelida
  2. Echinodermata
  3. Insecta
  4. Mollusca
AIPMT 2001
10

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

  1. Earthworm
  2. Lower invertebrates
  3. Scorpion
  4. Snake
AIPMT 2001
11

In Hydra, waste material of food digestion and nitrogenous waste material are removed respectively from

  1. mouth and mouth
  2. body wall and body wall
  3. mouth and body wall
  4. mouth and tentacles
AIPMT 2001

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