Plant Physiology
Biology ⇒ Plant Biology
Plant Physiology starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Plant Physiology.
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When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
A plant is placed in a dark room for several days. What will happen to its rate of photosynthesis?
Describe the difference between xylem and phloem.
Describe the process of osmosis in plant cells.
Explain how temperature affects the rate of photosynthesis.
Explain the importance of mineral nutrients in plant growth.
A plant is placed in a dark room for several days. What will happen to its rate of photosynthesis?
A potted plant is kept in a sealed transparent container with adequate water but no air holes. After several hours in sunlight, what changes would you expect in the levels of oxygen and carbon dioxide inside the container? Explain your answer.
A student sets up an experiment to measure the rate of photosynthesis in two identical plants. One plant is placed under red light and the other under green light. Predict which plant will have a higher rate of photosynthesis and explain why.
Which gas is taken in by plants during photosynthesis?
(1) Oxygen
(2) Carbon dioxide
(3) Nitrogen
(4) Hydrogen
Which of the following best describes the function of mitochondria in plant cells?
(1) Photosynthesis
(2) Respiration
(3) Water transport
(4) Protein synthesis
Which of the following best describes the process of translocation in plants?
(1) Movement of water from roots to leaves
(2) Movement of food from leaves to other parts
(3) Loss of water vapor from leaves
(4) Absorption of minerals from soil
Which of the following factors does NOT affect the rate of transpiration?
(1) Humidity
(2) Wind speed
(3) Soil type
(4) Temperature
Fill in the blank: The green color of leaves is due to the presence of __________.
Fill in the blank: The movement of water through a plant from the roots to the leaves is called __________.
Fill in the blank: The opening and closing of stomata are controlled by __________ cells.
Fill in the blank: The process by which plants convert glucose into energy is called __________.
True or False: All plant cells contain chloroplasts.
True or False: Phloem transports only sugars in plants.
True or False: Photosynthesis occurs only during the day.
True or False: Plants respire only at night.
