Q1. Which plant growth regulator is used to promote parthenocarpy in fruits like tomatoes?A. CytokininB. GibberellinC. AuxinD. Ethylene
Q2. Select the incorrect statement regarding auxins:A. Auxins promote root initiation.B. Auxins inhibit lateral bud growth.C. 2,4-D is a natural auxin.D. IAA is a naturally occurring auxin.
Q3. Which statement about plant hormones is correct?A. Ethylene inhibits fruit ripening.B. Auxin promotes lateral bud growth.C. Abscisic acid induces seed dormancy.D. Gibberellins prevent seed germination.
Q4. Which of the following statements about auxin is incorrect?A. Auxin promotes cell elongation.B. Auxin promotes root initiation.C. Auxin inhibits apical dominance.D. Indole-3-acetic acid (IAA) is a natural auxin.
Q5. Which scientist discovered that gibberellins cause abnormal elongation of rice seedlings?A. Charles DarwinB. E. KurosawaC. F.W. WentD. H.H. Cousins
Q6. Which plant growth regulator delays leaf senescence and promotes nutrient mobilization?A. AuxinB. CytokininC. GibberellinD. Abscisic acid
Q7. Which of the following statements about senescence is correct?A. Senescence involves the synthesis of chlorophyll.B. Ethylene delays senescence.C. Cytokinins promote leaf senescence.D. Senescence is a form of programmed cell death.
Q8. What type of curve is obtained when growth is plotted against time in geometric growth?A. Linear curveB. S-shaped curveC. Parabolic curveD. Exponential curve
Q9. Which of the following statements about seed germination is correct?A. Water absorption is not essential for germination.B. Gibberellins promote the production of hydrolytic enzymes.C. Abscisic acid accelerates seed germination.D. Seed germination is independent of temperature.
Q10. Select the correct statement regarding parthenocarpy:A. Parthenocarpy results in seedless fruits.B. Parthenocarpy is induced only by cytokinins.C. Parthenocarpy requires fertilization.D. Parthenocarpy is common in cereals.