Plant Growth and Development
Biology ⇒ Plant Biology
Plant Growth and Development starts at 7 and continues till grade 12.
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See sample questions for grade 11
Describe the difference between primary growth and secondary growth in plants.
Describe the process of seed dormancy and its ecological significance.
Describe the role of temperature in seed germination.
Describe the role of the cork cambium in plant growth.
Explain how light quality (wavelength) affects plant growth and development.
Explain the difference between determinate and indeterminate growth in plants.
Explain the importance of meristems in plant growth and development.
Explain the role of phytochrome in photoperiodism.
Explain the significance of apical dominance in plants.
Explain why water is essential for seed germination.
Name the plant hormone that is commonly used to promote rooting in plant cuttings.
Name the plant hormone that promotes stomatal closure during water stress.
A plant is exposed to continuous red light, then briefly to far-red light before being placed in darkness. Will the plant exhibit a photoperiodic response typical of exposure to red or far-red light? Explain your answer.
A researcher applies gibberellin to a dwarf pea plant and observes increased stem elongation. Explain the physiological basis for this response.
Describe the molecular mechanism by which auxin regulates cell elongation in plant stems.
Describe the process and significance of programmed cell death (apoptosis) in plant development, providing one example.
Explain how the balance between auxin and cytokinin concentrations influences organogenesis in plant tissue culture.
