miércoles, 28 de febrero de 2024

LET'S LEARN ABOUT PLANTS!!!






What is Photosynthesis?
What is needed for Photosynthesis?
What happens during Photosynthesis?

The word photosynthesis can be separated to make two smaller words:

“photo” which means light

“synthesis” which means putting together

Plants need food but they do not have to wait on people or animals to provide for them.

Most plants are able to make their own food whenever they need it. This is done using

light and the process is called photosynthesis.

Photosynthesis is the process by which plants make their own food.  We will add more details to this definition after making a few things clear as you will see below.

To make food, plants need not just one but all of the following:

  • carbon dioxide

  • water

  • sunlight

Let’s take a look at how these are collected by plants.

  • Carbon dioxide from the air passes through small pores (holes) in the leaves.

  • These pores are called stomata.

  • Water is absorbed by the roots and passes through vessels in the stem on its

  • way

  • to the leaves.

  • Sunlight is absorbed by a green chemical in the leaves.

The photosynthesis process takes place in the leaves of plants.

The leaves are made up of very small cells.

Inside these cells are tiny structures called chloroplasts

Each chloroplast contains a green chemical called chlorophyll which gives leaves their green color.

  • Chlorophyll absorbs the sun’s energy.

  • It is this energy that is used to split water molecules into hydrogen and oxygen.

  • Oxygen is released from the leaves into the atmosphere.

  • Hydrogen and carbon dioxide are used to form glucose or food for plants.

Some of the glucose is used to provide energy for the growth and development of plants

while the rest is stored in leaves, roots or fruits for later use by plants.