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 Multiple Choice QuestionsMultiple Choice Questions

261.

Which of the following is a coelenterate ?

  • Sea lily

  • Sea squirt

  • Sea cucumber

  • Sea fan


262.

As per classification which of the following is correct ?

  • Ascaris, Pheretima, Grasshopper

  • Hydra, Pterido, Leucosolenia

  • Starfish, Grasshopper, Solen

  • Pila, Dentalium, Octopus


263.

Commercial silk is obtained from :

  • cocoon/ pupa

  • caterpiller

  • adult moth

  • both egg and adult moth


264.

In which of the following class of Annelida, one pair ovaries and several pair testes are found ?

  • Archiannelida

  • Hirudinea

  • Oligochaeta

  • Polychaeta


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265.

Ambulacral grooves are absent in the living forms of the Class

  • Crinoidea

  • Asteroidea

  • Ophiuroidea

  • Echinodermata


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266.

Which of the following Phyla are included in Enterozoa?

  • Annelida, Mollusca, Porifera

  • Echinodermata, Hemichordata, Porifera

  • Mollusca, Arthropoda, Hemichordata

  • Porifera, Mollusca, Arthropoda


C.

Mollusca, Arthropoda, Hemichordata

Mollusca, Arthropoda, Hemichordata are classified in Plylum- Enterozoa as they are the animals with a digestive tract or cavity.


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267.

Hydra receives impulses and stimuli through

  • nerve net

  • nematocytes

  • sensory cells

  • flame cells


268.

The sites of the first, second and third moulting of the Ascaris larva are respectively

  • soil, lung and intestine

  • liver, stomach and intestine

  • soil, alveoli and alveoli

  • soil, intestine and lung


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269.

Class Crustacea has following features :

  • Cephalothorax, book lungs, chitinous exoskeleton

  • Head and thorax, biramous appendages, book lungs

  • Head and thorax, book lungs, chitinous exoskeleton

  • Cephalothorax, biramous appendages, gills


270.

Identify the correct statement

  • In amniotes last nerve is spinal accessory

  • In non- amniotes last nerve is vagus.

  • Optic is shortest nerve

  • Olfactory nerves has mixed fibres.


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