Q1. Which plant hormone causes the rapid elongation of internodes in deepwater rice?A. AuxinB. GibberellinC. EthyleneD. Cytokinin
Q2. Which plant growth regulator is used to promote root formation in tissue culture?A. CytokininB. GibberellinC. AuxinD. Ethylene
Q3. Which of the following is an example of developmental plasticity in plants?A. Apical dominanceB. Heterophylly in corianderC. Seed dormancyD. Phototropism
Q4. Select the correct statement regarding parthenocarpy:A. Parthenocarpy results in seedless fruits.B. Parthenocarpy requires fertilization.C. Abscisic acid induces parthenocarpy.D. Parthenocarpy is common in cereals.
Q5. What is the term for the reversion of mature cells to a meristematic state?A. DifferentiationB. DedifferentiationC. RedifferentiationD. Senescence
Q6. Which statement about the sigmoid growth curve is correct?A. The lag phase represents rapid growth.B. The log phase is the phase of exponential growth.C. The stationary phase shows maximum growth rate.D. The sigmoid curve has no stationary phase.
Q7. Select the correct statement regarding plant plasticity:A. Plasticity is the ability to produce different types of fruits.B. Heterophylly is an example of plasticity.C. Plasticity refers to permanent genetic changes.D. Plasticity prevents developmental changes in plants.
Q8. Which plant growth regulator induces flowering in mango plants?A. GibberellinB. CytokininC. EthyleneD. Abscisic acid
Q9. What is the process by which differentiated cells regain their ability to divide?A. RedifferentiationB. DedifferentiationC. DifferentiationD. Apoptosis
Q10. Which statement about differentiation is correct?A. Differentiation leads to loss of cell function.B. Differentiated cells cannot redifferentiate.C. Differentiation produces specialized cells.D. Xylem vessels can undergo dedifferentiation.