Q1. Which phase of growth involves cells attaining their maximal size with thickened cell walls?A. Elongation phaseB. Meristematic phaseC. Maturation phaseD. Lag phase
Q2. Which plant growth regulator is responsible for promoting nutrient mobilization, thereby delaying leaf senescence?A. AuxinB. CytokininC. GibberellinD. Abscisic acid
Q3. What is the process by which differentiated cells regain the ability to divide and form new meristematic tissue?A. DifferentiationB. DedifferentiationC. RedifferentiationD. Apoptosis
Q4. Which plant growth regulator is known to promote female flowers in cucumbers, increasing yield?A. AuxinB. CytokininC. EthyleneD. Gibberellin
Q5. Which hormone is responsible for the phenomenon of apical dominance?A. GibberellinB. CytokininC. AuxinD. Ethylene
Q6. Which growth curve phase is known for a slow initial growth rate before the exponential phase?A. Log phaseB. Lag phaseC. Stationary phaseD. Decline phase
Q7. Which plant hormone is used commercially for fruit ripening?A. GibberellinB. CytokininC. EthyleneD. Auxin
Q8. Which plant growth regulator is widely used to induce flowering in long-day plants under short-day conditions?A. AuxinB. CytokininC. GibberellinD. Ethylene
Q9. Which statement regarding plant growth is incorrect?A. Growth is a permanent and irreversible increase in size.B. Primary growth increases the thickness of plants.C. Secondary growth occurs due to lateral meristems.D. Intercalary meristems contribute to elongation in grasses.
Q10. During which phase of growth do cells show maximum increase in their size and develop thick cell walls?A. Meristematic phaseB. Elongation phaseC. Maturation phaseD. Stationary phase