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
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
23. Deficiency of which mineral causes shortening of internodes and reduction in cambium activity ?
24. In the first phase of absorption of mineral ions from soil to root, element passes through which plant ?
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
26. According to mass flow principle what is responsible for absorption of water ?
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
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
29. Toxicity of Mn inhibits function of which other elements ?
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