Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

Jaundice is a disorder of 

  • excretory system

  • skin and eyes

  • digestive system

  • digestive system

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12.

Kranz anatomy is one of the characteristics of the leaves of 

  • potato

  • wheat

  • sugarcane

  • sugarcane

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13.

Transport of food material in higher plants takes place through

  • companion cells

  • transfusion tissue

  • tracheids

  • tracheids

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14.

Which one o0f the following is monoecious?

  • Marchantia

  • Cycas

  • Pinus

  • Pinus

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15.

Black (stem) rust of wheat is caused by

  • Alternaria solani

  • Ustilago nuda

  • Puccinia graminis

  • Puccinia graminis

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16.

ABO blood grouping is controlled by gene I, which has three alleles and show codominance, There are six genotypes. How  many phenotypes in all are possible.?

  • Six

  • Three

  • Four

  • Four

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17.

Three of the following statements about enzymes are correct and one is wrong. which one is wrong?

  • Enymes require optimum pH for maximal activity

  • Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures 80o-90o C

  • Enzymes are highly specific

  • Enzymes are highly specific

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18.

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called

  • thylakoid

  • endoplasmic reticulum

  • plasmalemma

  • plasmalemma

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19.

Root development is promoted by

  • abscisic acid

  • auxin

  • gibberellin

  • gibberellin

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20.

Crocodile and penguin are similar to whale and dogfish in which one of the following features?

  • possess a solid single -stranded central nervous system

  • lay eggs and guard them till they hatch

  • possess a bony skeleton

  • possess a bony skeleton


D.

possess a bony skeleton

Crocodile, penguin, whale and dogfish, all are chordates. So, all of these have gill slits at some stage of development.

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