Please enable JavaScript.
Coggle requires JavaScript to display documents.
Naming compounds (Photosynthesis (What is needed (Carbon dioxide, Water,…
Naming compounds
Photosynthesis
-
-
-
-
-
Chloroplasts contain a green substance called chlorophyll. This absorbs the light energy needed to make photosynthesis happen
-
Plants get carbon dioxide from the air through their leaves, and water from the ground through their roots. Light energy comes from the Sun.
The oxygen produced is released into the air from the leaves. The glucose produced can be turned into other substances, such as starch and plant oils, which are used as an energy store. This energy can be released by respiration.
A leaf usually has a large surface area, so that it can absorb a lot of light. Its top surface is protected from water loss, disease and weather damage by a waxy layer.
The upper part of the leaf is where the light falls, and it contains a type of cell called a palisade cell. This is adapted to absorb a lot of light. It has lots of chloroplasts and is shaped like a tall box.
The water needed for photosynthesis is absorbed through the roots and transported through tubes to the leaf.
Note that root cells do not contain chloroplasts, as they are normally in the dark and cannot carry out photosynthesis.
The roots have a type of cell called a root hair cell. These project out from the root into the soil, and have a big surface area and thin walls. This lets water pass into them easily.
-
Plants respire all the time, whether it is dark or light. They photosynthesise only when they are in the light.
-
