31 Years NEET Previous Year Questions: Animal Kingdom - 1

11 Questions MCQ Test Biology 31 Years NEET Chapterwise Solved Papers | 31 Years NEET Previous Year Questions: Animal Kingdom - 1

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Select the Taxon mentioned that represents both marine and freshwater species:        [2014]


Cnidarians are aquatic, mostly marine, solitary or colonial sessile or free-swimming radially symmetry animals while members of Ctenophora, Cephalochordata, Echinodermata are found exclusively in the marine environment.
So the correct answer is 'Cnidaria'.



 Which one of the following living organisms completely lacks a cell wall?     [2014]


Gorgonia (sea-fan) is an animal and all animals lacks a cell wall.


Planaria possesses high capacity of:                 [2014]

  • Planaria is a flatworm that possesses a high power of regeneration due to the neoplastic cells which are found in them.
  • If an individual is cut transversely into two parts, the anterior segment will generate a new tail and the posterior end will develop a new head.

Explain the process of regeneration in Planaria. How is this process  different from reproduction?


 A marine cartilaginous fish that can produce electric current is:      [2014]


Torpedo is a sluggish fish. It is carnivorous. The prey is firstly killed by electric shock. The shock can also be harmful to human beings.


Which of the following animals is not viviparous?                [2015 RS]


Platypus is an oviparous animal (egg-laying). It belongs to the class- Mammalia.


Which of the following represents the correct combination without any exception?

  • Cyclostomata have sucking and circular mouth without jaws. Median fins (appendages) are present but paired fins (appendages) are absent. Integuments are without scales.
  •  In aves, forelimbs are modified into wings for flying and hind limbs are used for walking and running. The body is covered with feathers. Skin is thin, dry and non-glandular. Lungs have air sacs. 
  • In mammals, mammary glands are present for the nourishment of the young ones. Hairs are present on the body. They have 2 pairs of limbs. Pinnae are absent in monotreme (mammals that lay eggs). 
  • Chondrichthyes have a persistent notochord, placoid scales as the exoskeleton and ventrally positioned mouth. Gill slits are not covered by an operculum. 

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:   [2015 RS]

  • Petromyzon (Lamprey) 
    Class: Cyclostomata 
    Phylum: Chordata
  • It is a jawless fish that lays eggs in freshwater. The eggs hatch in about 3 weeks into minute transparent larvae called ammocoetes.
  • After metamorphosis, the young lampreys swim down to the sea where they remain for 3 or 4 years before reaching maturity when they once again migrate to streams or rivers to spawn and die.
  • Gonads become mature at that time when adults return to rivers for spawning.

Lamprey - Wikipedia


Body having meshwork of cell, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum ______.               [2015 RS]

  • Phylum Porifera (the sponges) has a cellular level of body organisation, with an inner cellular layer consisting of highly specialised flagellated cells called choanocytes (or collar cells).
  • The development in this phylum is indirect as it includes a free-swimming larva called amphiblastula or parenchymula for dispersal of the species.

Which of the following features is not present in the phylum - Arthropoda?        

  • Parapodia are present in aquatic annelids like Nereis, which help them in swimming.
  • The other three features, i.e. metameric segmentation, jointed appendages and chitinous exoskeleton are present in phylum-Arthropoda. 

Which of the following characteristic feature always holds true for the corresponding group of animals?             [2016]

  • Chondrichthyes always have a cartilaginous endoskeleton.
  • Most mammals are viviparous, giving birth to live young. However, the five species of monotreme, the platypuses and the echidnas lay eggs.
  • Chordates have jawless animals (Agnatha) as well.
  • Most reptiles have 3 chambered heart. Crocodilians have 4 chambered hearts. Turtles have 3 chambered heart but with an incomplete wall in the single ventricle, so their hearts are functionally 4 chambered.

Which one of the following characteristics is not shared by birds and mammals ?           [2016]

  • Giving birth to living young that develop within the mother's body rather than hatching from eggs is called viviparity.
  • All mammals except the monotremes are viviparous. Birds are oviparous and mammals are viviparous.