18. Higher order thinking skills (HOTS) I

What would be expected to happen if,

 

a. Gibberellin is applied to rice seedlings?

b. A rotten fruit gets mixed with unripe fruits.

c. When cytokinin is not added to the culture medium.

 

i. Gibberellins cause the exceptional elongation of internodes when they are administered. FalseTrue

 

ii. The mass of undifferentiated cell is called callusembryoidembryo. If the rotten fruits get mixed with unripe fruits, then the gibberellinsethyleneauxins produced from the rotten fruits will hasten the ripening of the unripe fruits.

 

iii.  Cell division, growth, and differentiation will occur even if cytokinin is not administered in the culture media. TrueFalse

 

2. A plant hormone was first discovered in Japan when rice plants were suffering from Bakanae disease caused by Gibberella fujikoroi. Based on this information answer the following questions:

 

a. Identify the hormone involved in this process.

b. Which property of this hormone causes the disease?

c. Give two functions of this hormone.

 

i. AuxinGibberellinEthylene is the hormone that is involved in this process.

 

ii. The hormone stimulates the elongation of internodeabscission and dormancybolting.

 

iii. The hormone break the seed dormancy of potato tubers. TrueFalse

 

iv. When compared to gibberellins, auxins are efficient in inducing the formation of parthenocarpic fruits. FalseTrue