What does a plant need to perform photosynthesis? | …

When the carbon dioxide, water and energy from the sun are combined, the sun turns the water and carbon dioxide into glucose (sugar). The plant uses the glucose as food and takes hydrogen molecules from the water to keep itself from getting dry and wilted.

Glucose gives the plant energy. They use this energy to make more leaves, flowers, fruit or vegetables and seeds that can grow into new plants. The glucose also gives the plant the energy it needs to grow taller and fuller and make the cell walls of the plant.

We know why it is important for flowers to make new leaves, flowers, fruits, vegetables and seeds, but why are the plants cell walls so important?

Now we need to understand how cells can use the products ofphotosynthesis to obtain energy.

Green plants absorb light energy using chlorophyll in their leaves. They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration, or converted into starch and stored. Oxygen is produced as a by-product.


Why do plants need water? - Science Sparks

Plants use light energy to make sugars from carbon dioxide - Photosynthesis

We also have to be careful when studying green plants because in the light the green parts of these plants carry out photosynthesis as well as respiration.


BBC - GCSE Bitesize: Photosynthesis

But since plants don’t have parents (or kitchens), they have to make their own food. When plants make their own food, it is called photosynthesis.
Photosynthesis is a big word, isn’t it? It means light (photo) used to make something (synthesis). Hhmmm…can you guess how plants make their food?
If you guessed the sun, you are right! Here’s how it works…

Photosynthesis dictionary definition | photosynthesis …

Photosynthesis does the opposite of respiration. Carbon dioxide is absorbed and oxygen is produced. In order to study respiration in green plants we must block out the light, because although green plants respire all the time they only photosynthesize in the light.

Biology of Plants: Introduction - MBGnet



If factors that aid in photosynthesis are absent or less, it can negatively affect the fruits of the plant. For example, less light, insects that chew on leaves, less water can make plants such as (tomato plant) suffer and produce less yield.

P lants are alive, just like people and animals



1. Photosynthesis is the most important chemical process in the world. Without it, plants and people could not exist.
2. A plant’s leaves are vital for its survival. Most of the photosynthesis process takes place in the leaves of a plant.

Living things all do certain things: They grow and die

Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. (singular: stoma. plural: stomata)

The lower part of the leaf has loose-fitting cells, to allow carbon dioxide to reach the other cells in the leaf. This also allows the oxygen produced in photosynthesis to leave the leaf easily.




Carbon dioxide is present in the air we breathe, at very low concentrations. Even though it forms about .04% of the air, it is a needed factor in light-independent photosynthesis.

In higher concentrations, more carbon is incorporated into carbohydrate, therefore increasing the rate of photosynthesis in light-independent reactions.