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Animal Kingdom

AIPMT 2002MCQEasyNot asked in last 5 yrs+4−1
Ques. 1AIPMT 2002

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

  1. Sponge
  2. Earthworm
  3. Cockroach
  4. Hydra

Answer

(4) Hydra

Solution

Sponges (Porifera) have the cellular level of organisation, so nerve cells are absent.

Hydra (Coelenterata) has nerve cells arranged as a diffuse nerve net, but no brain (no central nervous system).

Earthworm and cockroach, on the other hand, have a brain (cerebral/supra-oesophageal ganglia) and a ventral nerve cord.

∴ Nerve cells are present but brain is absent in Hydra.

Answer: (4)

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Ques. 2AIPMT 2002

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

  1. All chordates
  2. Some chordates
  3. Vertebrates
  4. Non-chordates
Ques. 3AIPMT 2001

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

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

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

  1. Earthworm
  2. Lower invertebrates
  3. Scorpion
  4. Snake
Ques. 5AIPMT 2001

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
Ques. 6AIPMT 2000

Which of the following animals have scattered cells with cell-tissue grade organisation?

  1. Sponge
  2. Hydra
  3. Liver fluke
  4. Ascaris
Ques. 7AIPMT 2000

Similarity in Ascaris lumbricoides and Anopheles stephensi is

  1. sexual dimorphism
  2. metamerism
  3. anaerobic respiration
  4. endoparasitism.
Ques. 8AIPMT 2000

Which of the following characters is absent in all chordates?

  1. Diaphragm
  2. Coelom
  3. Pharyngeal gill clefts
  4. Dorsal nerve cord
Ques. 9AIPMT 2000

What is true for mammalia?

  1. Platypus is oviparous.
  2. Bats have feathers.
  3. Elephant is ovoviviparous.
  4. Diaphragm is absent in them.
Ques. 10AIPMT 2000

Which gland secretes odorous secretion in mammals?

  1. Bartholin's
  2. Prostate
  3. Anal gland
  4. Liver

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All NEET Zoology chapters
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Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills