21.  State deficiency symptoms of Mo.

A. fruit yeild decreases

B. fall of fruit

C. N - deficiency appears.

D. death of root-apex and shoot-apex.

Answer : Option C

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22.  State importance of Ca.

A. Structural component of plasma membrance

B. For the synthesis if IAA.

C. Formation of bipolar centriole during cell-division

D. Formation of nuclear membrance

Answer : Option C

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23.  Deficiency of which mineral causes shortening of internodes and reduction in cambium activity ?

A. K

B. Fe

C. Cu

D. B

Answer : Option A

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24.  In the first phase of absorption of mineral ions from soil to root, element passes through which plant ?

A. Cell wall

B. Nuclear membrance

C. tonoplast

D. plasma membrance

Answer : Option A

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25.  By which principle, indirect storage of stable and non-diffusible ions is explained ?

A. ion exchange

B. principle of mass flow

C. Donnan equillibrium

D. principle of Diffusion

Answer : Option C

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26.  According to mass flow principle what is responsible for absorption of water ?

A. Transpiration

B. Turgidity

C. Osmotic pressure

D. Turgor pressure

Answer : Option C

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27.  Formation of FAD during N2 fixation occurs during which processes ?

A. growth and development

B. cell division and differentiation(b) cell division and differentiation

C. photosynthesis and transpiration

D. Respiration and photosynthesis

Answer : Option D

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28.  Which amino acid is formed when ? keto - glutaric acid reacts with NH3 duringtransmmination ?

A. Glutanic acid

B. Aspartic acid

C. Oxalo-acetic acid

D. None of these

Answer : Option D

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29.  Toxicity of Mn inhibits function of which other elements ?

A. Fe, Mg, S

B. Ca, Fe, Mg

C. Mg, K, Fe

D. Ca, P, S

Answer : Option B

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30.  Which substances of soil water are degraded gradually by, atmosphere and microorganisms ?

A. Organic material

B. inorganic material

C. elements

D. positive ions

Answer : Option A

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