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Animal Kingdom · Question 110

AIPMT 2003MCQMedium📈 Topic in 0% papers+4−1
1

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

Answer

(4) miracidium and metacercaria

Solution

Eggs of Fasciola hepatica hatch in water into the free-swimming ciliated miracidium larva.

⇒ The miracidium penetrates the snail (intermediate host) and develops into sporocyst → redia → cercaria.

⇒ Cercariae leave the snail and encyst on grass as metacercariae; sheep (primary host) are infected when they eat grass carrying metacercariae.

∴ Intermediate host: miracidium; primary host: metacercaria.

Answer: (4)

AIPMT 2003

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2

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
3

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

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

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

  1. All chordates
  2. Some chordates
  3. Vertebrates
  4. Non-chordates
AIPMT 2002
5

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

  1. Annelida
  2. Echinodermata
  3. Insecta
  4. Mollusca
AIPMT 2001
6

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

  1. Earthworm
  2. Lower invertebrates
  3. Scorpion
  4. Snake
AIPMT 2001
7

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
8

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

  1. Sponge
  2. Hydra
  3. Liver fluke
  4. Ascaris
AIPMT 2000
9

Similarity in Ascaris lumbricoides and Anopheles stephensi is

  1. sexual dimorphism
  2. metamerism
  3. anaerobic respiration
  4. endoparasitism.
AIPMT 2000
10

Which of the following characters is absent in all chordates?

  1. Diaphragm
  2. Coelom
  3. Pharyngeal gill clefts
  4. Dorsal nerve cord
AIPMT 2000
11

What is true for mammalia?

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

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