Name: Translocation of Mineral Ions
Uploaded: 2019-07-19
Duration: 8 min 6 s
Description: Translocation of mineral ions occurs in the plants through special channels called phloem. Watch this video to learn how the minerals are absorbed and transl...

Question

Identify six xerophytic features of leaves and explain how each features helps the plant to conserve water. Summarise the answer in a table.

Accepted Answer

Xerophytic features of leaves How it helps to the conservation of water Example (name of plants)

Sunken stomata or stomata inside the pits. Here stomata are not exposed to the air that reduces the rate of transpiration. Sitka spruce, Ammophila arenaria (marram grass)

Presence of hairs and trichomes. Hairs and trichomes help to trap a layer of moist air close to the leaf surface, reducing the steepness of the diffusion gradient for water vapour. Phlomis italica, marram grass

Xerophytic features of leaves How it helps to the conservation of water Example (name of plants)

Rolling of leaves. Due to the rolling of leaves, the thick, waterproof cuticle exposed to the air outside the leaves. The stomata open into the enclosed, humid place in the middle of the roll. Ammophila arenaria (marram grass)

Leaves in the form of needles. It reduces the surface area available for water loss. Sitka spruce

Xerophytic features of leaves How it helps to the conservation of water Example (name of plants)

Presence of cuticle. Cuticle is made up of waterproof substance cutin that forms a layer on the epidermis of the leaf. It prevents evaporation of water from leaves. Ammophila arenaria (marram grass)

Leaves are reduced to spines or become extremely small. It decreases the surface area of the leaves from which transpiration can take place. Opuntia

Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Plants, Exercise 6: Question

Mary Jones Biology Solutions for Exercise - Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Plants, Exercise 6: Question

Questions from Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Plants, Exercise 6: Question with Hints & Solutions

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