What is the function of roots?
• Roots hold the plants in soil.
• Roots absorb water and nutrient from the soil.
• Roots store food for plants use.
• Roots have root hairs that help to increase the surface area to absorb water and nutrient from the soil.
What is the function of stems?
• Stems act as a transport channel for water and nutrients from roots to the leaves and for food from leaves to the roots.
• Stems also support leaves, flowers and fruits.
What is the function of leaves?
• Leaves help to make food for the plants
In the presence of sunlight, leaves take in carbon dioxide gas from the air and release oxygen gas to the air and making food for the plants. Leaves supply the oxygen gas we breathe that we need to stay alive. This process is called photosynthesis.
Photosynthesis process occurs in green leaves that contain green pigments called chlorophyll.
(in the presence of sunlight)
CO2 + H2O --> sugar + O2
Carbon dioxide + water --> food + oxygen
• Leaves also help plants to respire.
What is the function of flowers?
• Flowers are the reproductive organ in the plants.
• Flowers produce seeds used for sexual reproduction.
• Flowers are usually beautiful with bright colors and fragrant to attract insects, bees
(pollinators) for pollination. Pollination process is the transfer of pollen from anther to stigma of flowers.
• Flowers help to produce fruits and carry seeds inside for reproduction of plants.
Function of parts of plant
About Plants
What is a Plant?
A plant is a living thing. It makes its own food through green pigments called chlorophyll by using sunlight.
Plants are very important in our lives.
People and some animals eat plants as their food.
People make house from wood from the trees.
Some plants are used to cure people.
• sap from aloe vera plants is used to soothe pain from burns or insect bites
• herbal plants are used to cure people from illness
The most important thing about plants is that plants provide the gas we need to stay alive.
The gas is called oxygen.
During the daytime in the presence of sunlight, plants take in carbon dioxide from the air and give out oxygen to the air. This process is called photosynthesis.
Parts of a plant
• root
• stem
• leaf
• flower
Type of a plant
• flowering plant
• non flowering plant
A flowering plant is a plant that produces flowers. Example: Daisies, Sunflower and Balsam trees.
Some flowering plants also produce fruits. The flowers develop into fruits that contain seeds. Example: Papaya trees, Banana trees and Apple trees.
A non flowering plant is a plant that does not produce flowers. Example: ferns and mosses.
What do Plants need to grow?
Plants need sunlight and water to grow.
Too much of water will make the plants die. Not enough of water will make the plants wilt. Plants just need the right amount of water for healthy growth.
As plants grow, plants become taller and produce more leaves. The size of the stems also increases in size.
Life cycle of a plant
Life cycle of a plant involves several steps:
• seeds fall onto soil
• tiny root starts to sprout
• root starts to grow into the ground
• shoot grows upward
• young plant with more leaves
• adult plant
Why do plants bear fruit?
For reproduction of plants.
Inside the fruits are seeds. Seeds from fruit fall onto soil and grow into new plants.
There are many ways how the seeds fall onto the soil.
• animal’s dropping after animal eat the fruit that contain seeds
• ripe fruit fall onto the soil
• ripe fruit explode and scatter the seeds
