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Animal Kingdom · Question 97

AIPMT 2006MCQEasy📈 Topic in 0% papers+4−1
1

Biradial symmetry and lack of cnidoblasts are the characteristic of

  1. Hydra and starfish
  2. starfish and sea anemone
  3. Ctenoplana and Beroe
  4. Aurelia and Paramecium

Answer

(3) Ctenoplana and Beroe

Solution

As per NCERT, ctenophores (comb jellies), e.g. Pleurobrachia and Ctenoplana, are diploblastic, marine animals with eight external rows of ciliated comb plates; cnidoblasts are absent.

∵ Ctenophores show biradial symmetry and lack cnidoblasts, Beroe is also a ctenophore.

∵ Hydra, sea anemone and Aurelia are cnidarians (have cnidoblasts); starfish is an echinoderm; Paramecium is a protist.

Answer: (3)

AIPMT 2006

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2

Two common characters found in centipede, cockroach, and crab are

  1. book lungs and antennae
  2. compound eyes and anal cerci
  3. jointed legs and chitinous exoskeleton
  4. green gland and tracheae
AIPMT 2006
3

In which one of the following sets of animals do all the four give birth to young ones?

  1. Kangaroo, hedgehog, dolphin, Loris
  2. Lion, bat, whale, ostrich
  3. Platypus, penguin, bat, hippopotamus
  4. Shrew, bat, cat, kiwi
AIPMT 2006
4

Metameric segmentation is the characteristic of

  1. Mollusca and Chordata
  2. Platyhelminthes and Arthropoda
  3. Echinodermata and Annelida
  4. Annelida and Arthropoda
AIPMT 2006
5

Which one of the following is a matching set of a phylum and its three examples?

  1. Porifera - Spongilla, Euplectella, Pennatula
  2. Cnidaria - Bonellia, Physalia, Aurelia
  3. Platyhelminthes - Planaria, Schistosoma, Enterobius
  4. Mollusca - Loligo, Teredo, Octopus
AIPMT 2006
6

Which one of the following has an open circulatory system?

  1. Octopus
  2. Pheretima
  3. Periplaneta
  4. Hirudinaria
AIPMT 2006
7

In contrast to annelids the platyhelminthes show

  1. absence of body cavity
  2. bilateral symmetry
  3. radial symmetry
  4. presence of pseudocoel.
AIPMT 2005
8

From the following statements select the wrong one

  1. Prawn has two pairs of antennae.
  2. Nematocysts are characteristic of the phylum Cnidaria.
  3. Millipedes have two pairs of appendages in each segment of the body.
  4. Animals belonging to phylum Porifera are marine and fresh water.
AIPMT 2005
9

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
AIPMT 2005
10

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
11

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

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