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.
A plant is exposed to 8 hours of light and 16 hours of darkness each day. If it is a short-day plant, will it flower?
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.
Which meristem is responsible for the increase in length of roots and shoots? (1) Apical meristem (2) Lateral meristem (3) Intercalary meristem (4) Cork cambium
Which of the following best describes the function of the root cap? (1) Absorbs water (2) Protects the root tip (3) Stores food (4) Conducts photosynthesis
Which of the following best describes vernalization? (1) Exposure to light (2) Exposure to cold (3) Exposure to water (4) Exposure to heat
Which of the following is a function of abscisic acid? (1) Promotes cell division (2) Induces seed dormancy (3) Stimulates stem elongation (4) Promotes fruit ripening
Fill in the blank: The hormone __________ is known to promote cell division in plant roots and shoots.
Fill in the blank: The hormone __________ is known to promote fruit ripening and leaf abscission.
Fill in the blank: The movement of plant organs in response to the direction of light is called __________.
Fill in the blank: The process by which a seed resumes growth after dormancy is called __________.
A plant is exposed to 8 hours of light and 16 hours of darkness each day. If it is a short-day plant, will it flower?
True or False: All plants require the same photoperiod to flower.
True or False: Cytokinins delay leaf senescence.
True or False: Ethylene is a gaseous plant hormone.
