Question

A. Which of the following is a gaseous phytohormone ?
(A) IAA
(B) ABA
(C) Ethylene
(D) Zeatin

B. According to IUBMB, in how may classes all enzymes have been classified ?
(A) 6
(B) 10
(C) 100
(D) 4
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Answer 1

Explanation:

1 st answer is c i dont know second answer

Answer 2

A. Ethylene is a gaseous phytohormone.  

“Ethylene is a gaseous phytohormone” which is involved in aging process of the plant. Apart from it also play vital role in natural ripening of the fruit, leaf senescence. It also has major role in controlling life cycle of plant.  

B. All enzymes are classified into 6 classes according to IUBMB.

The enzymes in 6 classes are as mentioned below,

• Oxidoreductase  
• Transferase  
• Hydrolases  
• Lyases  
• Isomerase  
• Ligase