Oxford AQA IGCSE · CORE Biology (9221)
5 multiple-choice questions marked as you go, and 1 written questions with worked solutions. All on Exchange and transport in plants.
A specific plant tissue consists of living cells with a cell wall made of cellulose, a large permanent vacuole, and is located in the middle of a leaf to facilitate the diffusion of gases. However, this tissue has fewer chloroplasts than the tissue above it.
Which plant tissue is being described?
Which of the following correctly describes the transpiration stream in flowering plants and the environmental conditions that would most significantly increase its rate?
Vascular bundles in plants contain xylem and phloem. Which of the following correctly describes a structural difference and its functional consequence?
A plant is experiencing a high rate of transpiration on a hot, dry day. If the plant loses water faster than it can be replaced by the roots, which physiological response will occur to protect the plant, and which cells are responsible?
A plant is growing in hot, dry, and windy conditions.
Which of the following describes the likely response of the stomata and the effect on the plant's transpiration stream?
Explain the mechanism of the transpiration stream, starting from the absorption of water by root hairs to its eventual loss through the stomata in the leaves.
Write your answer out first, then check it against the worked solution.
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