martín and laura

Plants are all around us and can be different shapes,sizes and colours.They give us food,medicine and clothes,and they give us the oxygen we need to live.Like all living things,plants have different life processes:nutrition,reproduction and interaction.We can classify plants into herbaceous plants,bushes and trees.

The roots fix the plant to the ground and absorb the water and minerals from the soil.

Water and minerals rise up the stem through some vessels called the xylem and reach the leaves.

The leaves mix water,minerals,sunlight,carbon dioxide to make sap or glucose.

Chloroplast in the leaves help to make sap or glucose.

The leaves have holes called stomata t vhat absorb carbon dioxide and release oxygen.

Sap or glucose circulates from the leaves to the rest of the plant.

Remember!! Photosynthesis is the process in which plants use water,minerals,carbon dioxide and sunlight to make their own food.This also means that they release oxygen to the atmosphere

Most flowers have male and female reproductive organs. The carpel or pistil is the female reproductive organs.It produces ovules.

The stamens are the male reproductive organs.They produce pollen. The seed grows and grows

in the carpel or pistil.

The seed becomes a small fruit.

The fruit gets bigger and bigger and the petals fall down.

The fruit changes colour. Many seeds grow inside it.

The seed falls to the ground because:-The fruit ripens and opens.- Animals eat fruit and the seeds are in their feaces.

Germination takes place. A new plant grows from each seed.

The small plants turn into big ones. New parts grow such as trunk, branches, flowers, etc.

Wind pollination is used by plants which don´t have colourful petals to attract animals.

What is this?It´s

nectar.Mmmmmmmm….

Animal polination is carried out by birds and insects.Colourful petals attract animals to a flower to drink a sweet liquid called nectar.Pollen from the stamens stick to the animal´s body.

What are the two types of pollination?Describe one of them.

Why are plants so important?

What is fertilization in plants?

How do the stomata work?

How do plants make photosynthesis when it is cloudy?