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Animal Kingdom · Question 51

AIPMT 2015MCQEasy📈 Topic in 0% papers+4−1
1

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum

  1. Mollusca
  2. Protozoa
  3. Coelenterata
  4. Porifera.

Answer

(4) Porifera.

Solution

As per NCERT, sponges (Phylum Porifera) show a cellular level of organisation; the body has a water canal system with spongocoel and canals lined with choanocytes (collar cells, flagellated) that filter food.

⇒ Fertilisation is internal and development is indirect (having a larval stage which is morphologically distinct from the adult).

∴ These are characteristics of Phylum Porifera.

Answer: (4)

AIPMT 2015

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2

Metagenesis refers to

  1. occurrence of a drastic change in form during post-embryonic development
  2. presence of a segmented body and parthenogenetic mode of reproduction
  3. presence of different morphic forms
  4. alternation of generation between asexual and sexual phases of an organism.
AIPMT 2015
3

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is

  1. Neomyxine
  2. Petromyzon
  3. Eptatretus
  4. Myxine
AIPMT 2015
4

Which of the following endoparasites of humans does show viviparity?

  1. Trichinella spiralis
  2. Ascaris lumbricoides
  3. Ancylostoma duodenale
  4. Enterobius vermicularis
AIPMT 2015 (Cancelled)
5

Which of the following represents the correct combination without any exception? (Characteristics – Class)

  1. Sucking and circular mouth; jaws absent, integument without scales; paired appendages. – Cyclostomata
  2. Body covered with feathers; skin moist and glandular, forelimbs form wings; lungs with air sacs. – Aves
  3. Mammary gland; hair on body; pinnae; two pairs of limbs. – Mammalia
  4. Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. – Chondrichthyes
AIPMT 2015 (Cancelled)
6

Which of the following animals is not viviparous?

  1. Platypus
  2. Whale
  3. Flying fox (Bat)
  4. Elephant
AIPMT 2015 (Cancelled)
7

Which of the following characteristics is mainly responsible for diversification of insects on land?

  1. Exoskeleton
  2. Eyes
  3. Segmentation
  4. Bilateral symmetry
AIPMT 2015 (Cancelled)
8

Select the taxon mentioned that represents both marine and fresh water species.

  1. Echinoderms
  2. Ctenophora
  3. Cephalochordata
  4. Cnidaria
AIPMT 2014
9

Which one of the following living organisms completely lacks a cell wall?

  1. Cyanobacteria
  2. Sea-fan ( Gorgonia)
  3. Saccharomyces
  4. Blue-green algae
AIPMT 2014
10

Planaria possesses high capacity of

  1. metamorphosis
  2. regeneration
  3. alternation of generation
  4. bioluminescence.
AIPMT 2014
11

Planaria possesses high capacity of

  1. alternation of generation
  2. regeneration
  3. bioluminescence.
  4. metamorphosis
AIPMT 2014

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