Plant Water Relations
Biology ⇒ Plant Biology
Plant Water Relations starts at 8 and continues till grade 12.
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See sample questions for grade 8
A plant is placed in a dark room. What will happen to the rate of transpiration?
A potted plant is placed in a room with a fan blowing air directly on it. What is likely to happen to the rate of transpiration?
Describe how water moves from the soil to the leaves of a plant.
Describe the role of root hairs in plant water relations.
A plant is placed in a dark room. What will happen to the rate of transpiration?
A potted plant is placed in a room with a fan blowing air directly on it. What is likely to happen to the rate of transpiration?
A plant is exposed to high temperatures and strong sunlight for several hours. Predict and explain the effect on the rate of transpiration and the plant's water balance.
A student sets up an experiment with two identical plants. Plant A is watered with pure water, while Plant B is watered with a solution containing a high concentration of salt. After a week, Plant B appears wilted and its leaves are drooping. Explain why this happened using your knowledge of plant water relations.
Which of the following best describes osmosis?
(1) Movement of water from low to high concentration
(2) Movement of water from high to low concentration through a semi-permeable membrane
(3) Movement of minerals from roots to leaves
(4) Movement of gases in the air
Which of the following best explains why water is important for plant growth?
(1) It provides minerals
(2) It is a reactant in photosynthesis
(3) It is used for respiration only
(4) It is not important
Which of the following conditions would most likely increase the rate of transpiration?
(1) High humidity
(2) Low temperature
(3) Strong wind
(4) Darkness
Which of the following factors does NOT affect the rate of transpiration?
(1) Light
(2) Wind
(3) Soil type
(4) Humidity
Fill in the blank: The loss of water from the aerial parts of a plant is called _______.
Fill in the blank: The movement of water through a plant from the roots to the leaves and out into the air is called the _______ stream.
Fill in the blank: The opening and closing of stomata are controlled by _______ cells.
Fill in the blank: The process by which water is lost from the plant mainly through the stomata is called _______.
True or False: Plants can absorb water through their leaves as efficiently as through their roots.
True or False: The phloem transports water and minerals from the roots to the leaves.
True or False: Transpiration helps in the upward movement of water in plants.
True or False: Water can move both upward and downward in the xylem.
