Table of Contents
Does a liquid release or absorb energy?
liquid absorbs energy to evaporate; liquid releases energy when to freeze. does a solid release or absorb energy when it changes into a liquid? when it sublimes into a gas? solids absorb energy to melt; solids absorb energy to sublime.
Does a gas absorb energy as it changes into a liquid?
A gas absorbs energy as it changes into a liquid. Deposition is the phase change in which a substance changes directly from a gas to a solid without changing to a liquid first. the process that changes a substance from a liquid to a gas at temperatures below the substance’s boiling point.
What protects the surface of a plant from water loss?
The epidermis is usually one cell layer thick. However, in plants that grow in very hot or very cold conditions, the epidermis may be several layers thick to protect against excessive water loss from transpiration. A waxy layer known as the cuticle covers the leaves of all plant species.
Why is water loss from leaves unavoidable?
Transpiration, and resulting water loss, is unavoidable as the leaves’ stomata need to be open to let in carbon dioxide for photosynthesis. However, if water loss due to transpiration is too high, plants can react by closing the stomata. Water loss from plants is greatest during hot, dry conditions.
How do root hair cells absorb water?
Root hair cells Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
What do CAM plants do to help reduce the loss of water and still capture carbon dioxide?
C4 and CAM plants are plants that use certain special compounds to gather carbon dioxide (CO 2 ) during photosynthesis. Using these compounds allows these plants to extract more CO 2 from a given amount of air, helping them prevent water loss in dry climates.
Why do stomata open more on sunny days?
For plants to perform photosynthesis, they must keep their stomata open so they can take in carbon dioxide. The result is that, on a sunny day when the plant is photosynthesizing like crazy, the plant is losing lots and lots of water, as water vapor is released through the open stomata.