Class Crustacea differ from Insecta in having: from Biology NEET

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Trochophore is the larva of :

  • Neopilina

  • Chiton

  • Pila

  • all of these


2.

Food storage in Leucosolenia occur by :

  • ostia

  • osculum

  • thesocyte

  • spongocoel


3.

Blood leaving liver and going towards heart is rich in :

  • bile

  • urea

  • ammonia

  • oxygen


4.

'Digestion' word means :

  • buring of food

  • oxidation of food

  • hydrolysis of food

  • break down of food


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5.

Maximum absorption of water occurs in :

  • colon

  • rectum

  • large intestine

  • small intestine


6.

Chloragogen cells of earthworms are analogous to vertebrate :

  • lungs

  • liver

  • gut

  • kidneys


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7.

Class Crustacea differ from Insecta in having:

  • two pairs of antennae

  • jointed foot

  • chitinous cuticle

  • none of these


A.

two pairs of antennae

Main characteristics of Class- Crustacea and Insects are as follows:-

  1. Class Crustaces: They are mostly aquatic with gills, two pairs of antennal and three pairs of jaws, appendages. These are mostly biramous and always more than four in the trunk region. Eg, Prawn, Crab etc.
  2. Class- Insecta : These are hexapod arthropods with a pair of antennae and three pairs of jaws. Eg, Cockroach, Grasshopper etc.


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8.

Neural canal is present in :

  • humerus

  • tibia-fibula

  • vertebral column

  • cranial bones


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9.

Sigmoid notch is formed by :

  • cavity formed by humerus

  • cavity formed by radio ulna

  • cavity formed by tibia fibula

  • cavity formed by femur


10.

Which of the following character is presence essentialy in chordates ?

  • Ventral spinal chord

  • Dorsal heart

  • Pharyngeal gill slits

  • Blood flow in forward direction in ventral blood vessels


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