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All Physics Chemistry Botany Zoology

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For the transportation of Nitrogen to other part which of the following is preferably used?

A. Lysine B. Glutamate C. Aspartate D. Glutamine

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Explanation

Page number-204

12.6 Metabolism of Nitrogen

12.6.2 Biological Nitrogen Fixation

Mineral Nutrition

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Nodules of some plants like…….export the fixed nitrogen as….

A. Soyabean, amide B. Soyabean, Ureides C. Mango, amide D. Mango, Ureides

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Explanation

Page number-204

12.6 Metabolism of Nitrogen

12.6.2 Biological Nitrogen Fixation

Mineral Nutrition

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Ureides have

A. A particularly high Nitrogen to carbon ratio B. A particularly low Nitrogen to carbon ratio C. A particularly low Nitrogen to oxygen ratio D. A particularly low Nitrogen ratio

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Explanation

Page number-204

12.6 Metabolism of Nitrogen

12.6.2 Biological Nitrogen Fixation

Mineral Nutrition

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In photorespiration, glycolate is converted into serine and carbon dioxide in:

Mitochondria

Cholorplasts

Vacuoles

Peroxisomes

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An action spectrum of photosynthesis was first described by:

Jan Ingenhousz

Julius von Sachs

T.W. Engelmann

Cornelius van Niel

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Explanation

Read page 208, XI NCERT

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Dark reactions of photosynthesis are actually not totally independent of light as:

The initial reactions occur in the presence of light.

The reaction will be inhibited by the presence of light.

They can occur during the day as well.

They utilize the products of the light reaction.

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Explanation

Read page 209, XI NCERT

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All the following regarding the role of xanthophylls and carotenoids in photosynthesis are correct except:

They act as accessory pigments

Their peak absorption is in blue and red regions of VIBGYOR

They enable a wider range of wavelength of incoming light to be utilized for photosynthesis

They protect chlorophyll a form of photo-oxidation.

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Explanation

Read page 211, XI NCERT

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The chloroplast stroma lamella membrane:

Lack PS II as well as NADP reductase enzyme.

Lack PS II but have NADP reductase enzyme.

Lack NADP reductase enzyme but have PS II.

Have PS II as well as NADP reductase enzyme.

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Explanation

Read page 213, XI NCERT

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Which stage of the Calvin Cycle utilizes ATP?

Carboxylation

Reduction

Regeneration

Both 2 and 3

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Explanation

Read page 217, XI NCERT

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Which of the following are special features of the C₄ plants?

I. They have a special type of leaf anatomy.

II. They tolerate higher temperatures and show a response to high light intensities.

III. They lack photorespiration and have greater productivity of biomass.

Only I and II

Only I and III

Only II and III

I, II and III

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Explanation

Read page 218, XI NCERT

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