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Animal Kingdom · Question 53

AIPMT 2015MCQEasy📈 Topic in 62% papers+4−1
1

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

Answer

(2) Petromyzon

Solution

As per NCERT, cyclostomes (jawless vertebrates) are marine but migrate for spawning to fresh water; after spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean. Examples: Petromyzon (Lamprey) and Myxine (Hagfish).

⇒ This anadromous life history with an ammocoetes larva is shown by the lamprey Petromyzon; hagfishes ( Myxine, Eptatretus, Neomyxine) live and breed in the sea and have direct development.

Answer: (2)

AIPMT 2015

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2

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)
3

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)
4

Which of the following animals is not viviparous?

  1. Platypus
  2. Whale
  3. Flying fox (Bat)
  4. Elephant
AIPMT 2015 (Cancelled)
5

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)
6

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

  1. Echinoderms
  2. Ctenophora
  3. Cephalochordata
  4. Cnidaria
AIPMT 2014
7

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
8

Planaria possesses high capacity of

  1. metamorphosis
  2. regeneration
  3. alternation of generation
  4. bioluminescence.
AIPMT 2014
9

Planaria possesses high capacity of

  1. alternation of generation
  2. regeneration
  3. bioluminescence.
  4. metamorphosis
AIPMT 2014
10

A marine cartilaginous fish that can produce electric current is

  1. Pristis
  2. Torpedo
  3. Trygon
  4. Scoliodon.
AIPMT 2014
11

Which of the following are correctly matched with respect to their taxonomic classification?

  1. House fly, butterfly, tsetse fly, silverfish – Insecta
  2. Spiny anteater, sea urchin, sea cucumber – Echinodermata
  3. Flying fish, cuttlefish, silverfish – Pisces
  4. Centipede, millipede, spider, scorpion – Insecta
NEET 2013

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