Question 5 :
Which of the following statements are correct?<br>(i) The deficiency of any element can cause multiple symptoms<br>(ii) Same symptoms may be caused by the deficiency of one or several different elements<br>(iii) The concentration of the essential element below which plant growth is retarded is termed as critical concentration<br>(iv) Chlorosis is the loss of chlorophyll due to deficiency of N, K, Mg, Fe, S, Mn, Zn, Mo.<br>(v) Different plants respond differently to the deficiency of the same element.<br>

Question 9 :
Assertion: In solution culture of plants, iron is added in the from of $Fe^-$ EDTA. Reason: Hydroponics set-up is costly.

Question 10 :
Choose the correct answer from the alternatives given.<br>Micronutrients are needed in very small amount because:

Question 12 :
<br/>The symptoms of magnesium deficiency appear first in the mature leaves

Question 13 :
Assertion: Young leaves are first to show nitrogen deficiency. Reason: There is normal pigment synthesis in nitrogen deficient conditions.

Question 15 :
Which of the following after absorption is stored in form of phytin or phytic acids in vegetative tissues and seeds?<br/>

Question 17 :
The most important element associated with protoplasm and proteinaceous materials of plants is

Question 18 :
The insectivorous plants can grow well in the soil &#160;deficient of which mineral<br/>

Question 20 :
Which of the following element is most mobile in plant metabolism?