Plant Transport Systems
Biology ⇒ Plant Biology
Plant Transport Systems starts at 7 and continues till grade 12.
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See sample questions for grade 12
A plant is exposed to strong wind. Predict the effect on its transpiration rate and explain why.
A plant is placed in a humid, windless environment. Predict and explain the effect on its transpiration rate.
Describe how temperature affects the rate of transpiration in plants.
Describe the role of companion cells in phloem transport.
Describe the role of root pressure in plant water transport.
Describe the role of stomata in plant transport systems.
A plant is exposed to strong wind. Predict the effect on its transpiration rate and explain why.
A plant is placed in a humid, windless environment. Predict and explain the effect on its transpiration rate.
Which factor does NOT directly affect the rate of transpiration?
(1) Light intensity
(2) Wind speed
(3) Soil pH
(4) Humidity
Which of the following best describes translocation in plants?
(1) Movement of water from roots to leaves
(2) Movement of sugars from leaves to other parts
(3) Movement of minerals from soil to roots
(4) Movement of gases in stomata
Which of the following best explains why xylem vessels are dead at maturity?
(1) To allow active transport
(2) To provide structural support and unimpeded water flow
(3) To store food
(4) To carry out photosynthesis
Which of the following is a correct sequence for the movement of water from soil to leaf?
(1) Soil → Root hair → Cortex → Endodermis → Xylem → Leaf
(2) Soil → Cortex → Root hair → Xylem → Leaf
(3) Soil → Xylem → Root hair → Cortex → Leaf
(4) Soil → Leaf → Xylem → Root hair → Cortex
Fill in the blank: The loss of water vapor from the aerial parts of a plant is called __________.
Fill in the blank: The main force responsible for the movement of sugars in the phloem is __________ pressure.
Fill in the blank: The opening and closing of stomata are controlled by __________ cells.
Fill in the blank: The pressure-flow hypothesis explains the movement of __________ in the phloem.
State whether the following statement is true or false: Guttation occurs through stomata.
State whether the following statement is true or false: Water moves through the xylem by active transport.
True or False: Phloem transports organic nutrients from leaves to other parts of the plant.
True or False: Sieve tube elements in phloem are living cells.
