IB Biology SL 3.4.2 Mangrove Adaptations Question Bank

Practise IB Biology SL 3.4.2 by explaining how aerial roots and salt glands help mangrove trees survive waterlogged, saline swamps.

Exam points

Relate aerial roots and pneumatophores to gas exchange in waterlogged mangrove soil.
Explain how salt glands help mangrove leaves manage salt stress.

[Maximum number: 2]

The image shows a cast of the lower surface of a leaf from a busy Lizzie (Impatiens walleriana) plant as seen under a light microscope with a magnification of $600 \times$ .

Figure for Question B4.1.2—Adaptations to abiotic environment question 1 — IB Biology SL

Explain one feature of tree roots that help trees to survive in mangrove swamps.

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B4.1.2—Adaptations to abiotic environment question 1