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Animal Kingdom · Question 43

NEET 2017MCQEasy📈 Topic in 62% papers+4−1
1

Which among these is the correct combination of aquatic mammals?

  1. Dolphins, Seals, Trygon
  2. Whales, Dolphins, Seals
  3. Trygon, Whales, Seals
  4. Seals, Dolphins, Sharks

Answer

(2) Whales, Dolphins, Seals

Solution

As per NCERT, mammals are found in a variety of habitats; some of them have adapted to live in water.

⇒ Whales, dolphins and seals are aquatic mammals.

Trygon (sting ray) and sharks are cartilaginous fishes (Chondrichthyes), not mammals.

∴ The correct combination is whales, dolphins and seals.

Answer: (2)

NEET 2017

Keep practising — Animal Kingdom

2

In case of poriferans, the spongocoel is lined with flagellated cells called

  1. oscula
  2. choanocytes
  3. mesenchymal cells
  4. ostia
NEET 2017
3

In case of poriferans, the spongocoel is lined with flagellated cells called

  1. mesenchymal cells
  2. oscula
  3. ostia
  4. choanocytes
NEET 2017
4

Which of the following characteristic features always holds true for the corresponding group of animals?

  1. Possess a mouth with an upper and a lower jaw – Chordata
  2. 3-chambered heart with one incompletely divided ventricle – Reptilia
  3. Cartilaginous endoskeleton – Chondrichthyes
  4. Viviparous – Mammalia
NEET 2016 (Phase 1)
5

Which one of the following characteristics is not shared by birds and mammals?

  1. Viviparity
  2. Warm blooded nature
  3. Ossified endoskeleton
  4. Breathing using lungs
NEET 2016 (Phase 1)
6

Which of the following features is not present in the Phylum Arthropoda?

  1. Parapodia
  2. Jointed appendages
  3. Chitinous exoskeleton
  4. Metameric segmentation
NEET 2016 (Phase 1)
7

Which of the following features is not present in Periplaneta americana?

  1. Indeterminate and radial cleavage during embryonic development
  2. Schizocoelom as body cavity
  3. Metamerically segmented body
  4. Exoskeleton composed of N-acetylglucosamine
NEET 2016 (Phase 1)
8

Choose the correct statement

  1. All mammals are viviparous.
  2. All cyclostomes do not possess jaws and paired fins.
  3. All reptiles have a three-chambered heart.
  4. All pisces have gills covered by an operculum.
NEET 2016 (Phase 2)
9

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.
AIPMT 2015
10

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
11

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

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All NEET Zoology chapters
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