5
MCQ (Single Correct Answer)
The term synergistic action of hormones refers to
A
when two hormones act together but bring about opposite effects
B
when two hormones act together and contribute to the same function
C
when one hormone affects more than one function
D
when many hormones bring about any one function
6
MCQ (Single Correct Answer)
Apples are generally wrapped in waxed paper to
A
prevent sunlight for changing its colour
B
prevent aerobic respiration by checking the entry of $\mathrm{O}_2$
C
prevent ethylene formation due to injury
D
make the apples look attractive
7
MCQ (Single Correct Answer)
Growth can be measured in various ways. Which of these can be used as parameters to measure growth?
A
increase in cell number
B
increase in cell size
C
increase in length and weight
D
All of these
8
MCQ (Single Correct Answer)
Plasticity in plant growth means that
A
plant roots are extensible
B
plant development is dependent on the environment
C
stems can extend
D
None of the above
9
MCQ (Single Correct Answer)
To increase sugar production in sugarcanes, they are sprayed with
A
IAA
B
cytokinin
C
gibberellin
D
ethylene