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  PARTICIPATING SCHOOLS
1
 Point Option High School
 Virginia. USA
2
 C S Ramachary Memorial   Matriculation School
 Madurai, India
3
 Wako Kokusai High School
 Wako. Japan
 
 
 
 
MARINE PLANTS
Introduction    Absence of Root and flowers    Algae    Plants in pacific area    Food    Conclusion
Introduction

Plant life in sea is very different when compared to plant life in land. These sea plants experience a variety of physical factors. These include the availability of oxygen and light, pressure fluctuations, resistance to motion, salt concentration, etc. To adjust to the prevailing conditions, the sea plants have various types of adaptations These sea plants have specialized characters which help them to survive in the complex sea surrounding.

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Absence of roots and flowers

Plants that live on land have roots to take in water and food. But sea plants are always covered by water. All that the plant requires is in the sea water. Since these plants get food and water from all over their surface, roots are not necessary for them. The parts that look like roots are used to fasten the plant to rocks and other objects. They also keep the plant from being carried away by the current.

Sea plants have no flowers. But they have small lumps called spores. New sea plants grow from the spores.

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Algae

Algae are the main source of food for marine animals. Algae have no stems, roots, leaves or seeds. They have chlorophyll and make food by photosynthesis like land plants. There are varieties of algae like green algae, red algae, brown algae etc. Algae with single cells are known as diatoms. They are enclosed in a transparent crystal like cases. Many have projections which help them float in the water.

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Plants in the pacific area

In the pacific area there are more new plants than anywhere in the country. Plants from almost every part of the globe are found in the southern half of the pacific region. The native species are attractive and can withstand all competitions. Some species are rare because they are few in number and are scattered in the ocean.

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Food

The tiny sea plants depend on the nutrients, salt and minerals present in the sea water. Most of the living organisms live in the shallow bottom along the shores. The main reason for this is the sunlight which can touch the sea all way down. The food supply at the bottom of the shallow sea is very rich. The food flows down plenty in this area and every creature can eat to the full. The only problem here is finding a place to wait for the food to drop.

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Conclusion

As in land the whole animal kingdom in sea depends on the plant kingdom for food. The plants only know how to capture energy from sunlight and use it in making starch, sugar and protein. Without the marine plants the animals in the sea cannot survive. Thus marine plants form the primary factor in the food chain in the sea.

 
Research : Abinaya & Divya Bharathi, CSR
 
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