Monday, 11 December 2017

Growing in sun

                 GROWING IN THE SUN
                              ( PLANTS)



There are 287,665 named species of plants, although many more are  believed to exist. These range from trees, bushes and herbs to grasses, ferns and mosses. Most plants get their energy from sunlight,using a process called photosynthesis.

>HOW DO GREEN PLANTS FEED?

Green plants make their own food in a process called photosynthesis. Chlorophyll helps to trap energy from the sun. Plants use this energy to convert water and carbon dioxide into sugar and starch.

>HOW ARE MOST PLANTS GREEN?

Most plants are green because they contain the green pigment chlorophyll in their stems and leaves. Sometimes the green pigment is masked by other colours, such as red. This means that not all plants that contain chlorophyll look green.

>HOW DOES A FLOWER FORM SO QUICKLY?

When a flower opens out from a bud,  it may appear in just a few hours. This is possible because the flower is already formed in miniature inside the bud, just waiting to open out. The bud opens as its cells take in water and grow.

Note= (Blossoming) buds open in warm and sunny weather of spring.

>HOW MUCH SUGAR DOES PHOTOSYNTHESIS MAKE IN A YEAR?

Plants turn sugar they make by photosynthesis into other chemical compound that they need for growth and development. They also use sugar to make energy. Some scientists have estimate that the total mass of green plants alive in the entire world makes more than 170 billon tonnes of sugar every year by photosynthesis.

>WHAT MAKES A SEED GROW?

To grow, a seed need moisture, warmth and air. Some seed can only germinate (being to grow) if they have first been in the low temperature of winter. The seed of some plants can lie dormant inactive for a year before germinating.


>WHY DO SHOOT GROW UPWARDS?

Most shoots grow upwards, towards the sunlight. The growing tip of the shoot can detect the direction of the light,and chemical are released that makes it grow more on the lower or darker side, thus turning the shoot upward