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 10
A plant is exposed to continuous darkness. Predict and explain what will happen to its growth.
Describe how light affects the process of photosynthesis and plant growth.
Describe the process of seed dormancy and its significance.
Describe the role of gibberellins in plant growth.
A plant is exposed to continuous darkness. Predict and explain what will happen to its growth.
A student observes that a plant bends towards a window. What type of plant response is this? (1) Gravitropism (2) Hydrotropism (3) Phototropism (4) Thigmotropism
A farmer applies a synthetic auxin to a crop field. Predict two possible effects this could have on the plants and explain the underlying reasons.
A scientist is studying two groups of identical plants. Group A is grown in normal air, while Group B is grown in an environment with increased carbon dioxide concentration. Predict and explain the likely effect on the growth rate of Group B compared to Group A.
A student observes that a plant bends towards a window. What type of plant response is this? (1) Gravitropism (2) Hydrotropism (3) Phototropism (4) Thigmotropism
Which hormone is mainly responsible for fruit ripening? (1) Auxin (2) Ethylene (3) Cytokinin (4) Gibberellin
Which of the following best describes the function of the vascular cambium? (1) Absorbs water (2) Produces new xylem and phloem (3) Stores food (4) Protects the plant
Which of the following best explains why plants need sunlight? (1) For respiration (2) For transpiration (3) For photosynthesis (4) For reproduction
Fill in the blank: The hormone __________ is known for promoting fruit ripening and leaf abscission.
Fill in the blank: The hormone __________ is known to delay leaf senescence and promote cell division.
Fill in the blank: The movement of plant parts in response to gravity is called __________.
Fill in the blank: The process by which plants convert light energy into chemical energy is called __________.
True or False: All plants require the same amount of water for optimal growth.
True or False: Cytokinins promote cell division in plant roots and shoots.
True or False: Hydrotropism is the growth of plant roots towards moisture.
True or False: Phototropism is the growth of a plant in response to light.
