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NEET Practice Questions (MCQs) with Answers & Solutions

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All Physics Chemistry Botany Zoology

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The region within the plasma membrane and within the vacuole is called ?

A. nucleus membrane region B. passive transport region C. Cellular region D. Active transport region

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Which method of hydroponics used for raising plants in solution filled containers such jars, buckets, tubs and water tanks ?

static solution culture

nutrient film technique

Aeroponics

tissue culture

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Explanation

Static solution culture is a method by which plants are full-grown in reservoirs filled with an artificially made nutrient solution

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Which is improper pair of the following ?

A. Ionic balance in plants - Na B. Cell wall component - B C. Activation of Nitrogenase - Cu D. Required for iron absorption - Ni

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Which is proper pair of ions and its deficiency symtoms ?

A. Nitrogen - Induction of dormancy B. Potassium - Scorched look to leaves C. Phosphorous - Chlorosis D. Zinc - Brown spoted of fruit

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Amonification is the release of NHd₃d after the death of plants and animals and their degradation. Find the mistake in the given statement.

A. Conversion of NHd₃d into NOd₂d d^-d and NOd₃d d^-d is not mentioned. B. Excretory substances of dead bodies is not mentioned. C. Microbes responsible for degradation in the process are not mentioned. D. Release of NHd₃d from Nd₂d containing substances (denitrification) is not mentioned.

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Which is the true statement for the vanadium element ?

A. Deficiency do not regulate the size of stomata B. It is united in the formation of bipolar spindle during cell division. C. plant do not get ammonia from the soil, due to its deficiency D. It plays role as structural component of vitamin Biotin and thiamin.

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Of the following, S is essential for best production of which crop ?

A. Oily seeds B. leguminosae C. grains D. Fibres

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By which nitrite is converted into nitrate ?

Nitrobacter

Nitrosomonas

Agrobacterium

Psuedomonas

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Name the conjugated protein used as genetic material in living cells

A. Glyco protein B. Nucleo protein C. Metallo protein D. Lip oprotein

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Explanation

Nucleoproteins are conjugated proteins that include nucleic acids, which serve as the genetic material in living cells. These proteins play a crucial role in the storage and expression of genetic information.

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Who supported Griffith effect by molecular explanation ?

A. Hershay and chase B. Watson, crick Ninenberg C. Avery , Mc Carty and Macleod D. Griffith and Avery

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Explanation

Avery, McCarty, and MacLeod provided molecular evidence supporting Griffith's experiment. They demonstrated that DNA is the substance that causes bacterial transformation, thereby identifying DNA as the genetic material.

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