Tuesday, April 6, 2010

Plants in the mangrove part 2

SEA HOLLY





Vivipary is a process where seeds germinate and developed into seedlings while the fruit is still attached to the parent plant. Upon maturity, the seedlings will fall to the ground and lodge into the mud and grow immediately. Those that fall into the water will be dispersed by the tides. Examples of these trees are Rhizophora and Bruguiera.






Mangrove plants are able to survive in salt water because they had their ways to get rid of the excess salt. Some mangrove plants get rid of excess salt in their bodies is to excret it on their leaf surfaces. The salt is then removed by wind or rain. We called these plants the salt secretors. Example of these plants are the AVICENNIA AND SEA HOLLY.




We learn about the factors that affect the oxygen availability and PH of the water. The factor that affect the oxygen availability are the amount of water, plant and organism. The factors that affect the PH are the amount of plant and organism. We also learn what is the long term consequences of water pollution. The consequences are EXTINCTION OF ORGANISM, LESS FOOD AS WATER POLLUTION AFFECT THE FOOD CHAIN AND GETTING DISEASES LIKE CANCER AS WE EAT FOOD THAT IS FILLED WITH TOXIC. So we need to do something about it. Some ways are to tell factories to stop discharging unwanted waste into the sea and not to litter.





posted by Jia xin

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