How does light intensity and duration affect plant growth?

Most plants contain a special colored chemical or pigment called chlorophyll that is used in photosynthesis. Chlorophyll is what absorbs the sun's energy and turns it into chemical energy. Not all the light energy from the sun is absorbed.

Sunlight has many different colors in it. Chlorophyll usually absorbs red and blue light from the sun and reflects green light. It's the green light reflecting that makes some leaves look green! In the fall, some plants stop producing chlorophyll and we see leaves change color. With the chlorophyll gone, the green light is not being reflected anymore!

How does light intensity and duration affect the rate of photosynthesis?

All of the cells in a plant do cellularrespiration, but not all do photosynthesis. Lookat a tree. How much of it is green? The entiretree (except the outer bark) is living cells. Some are deep inside the trunk or roots. Theynever do photosynthesis. So where do they gettheir energy? From the sugar that the leaves make. The sugar and other stuff move around in the treesap. The cells that don’t do photosynthesis aredoing cellular respiration all day long to gettheir energy from the sugar.


do plants perform photosynthesis at night? | Yahoo Answers

This carbon dioxide is stored as a four-carbon acid, and is eventually used during the process of photosynthesis on the next day.

Other than plants, even some species of algae and bacteria resort to this process in order to generate their food.


Plants use a process called photosynthesis to make food

When sunlight falls on leaves, chlorophyll―a green-colored pigment that occurs in photosynthetic plants―captures the energy in it, and stores it for further use.

small amounts of water to do photosynthesis

Animals are ; they cannot carry out photosynthesis. This means that they have to eat other things to get the carbohydrates, fats, proteins, vitamins and minerals which they need.

Photosynthetic Environment Plants do not use all the ..

All organisms, animals and plants, must obtain energy to maintain basic biological functions for survival and reproduction. Plants convert energy from sunlight into sugar in a process called photosynthesis. Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen (Figure 2). The oxygen is released, or “exhaled”, from leaves while the energy contained within glucose molecules is used throughout the plant for growth, flower formation, and fruit development.

The Process of Photosynthesis in Plants (With Diagram)

It is not just animals that – plants carry out respiration as well. Plants respire all the time because their cells need energy to stay alive, but plants can only photosynthesise when they are in the light.

The Process of Photosynthesis in Plants

Wecan only do the second thing.
The first law ofthermodynamics tells us that matter cannot becreated or destroyed. It cannot come from nothingand it cannot disappear. So the same number ofatoms (C, H, O) have to enter and leave. Let uswrite photosynthesis as a balanced equation.

Easy Science for Kids Photosynthesis: How Plants Make Food and Energy

At night, when photosynthesis can’t take place, plants continue to consume oxygen but they don’t release any back into the room. Would that mean that plants really do compete with humans for oxygen?