Monday, October 3, 2011

Plankton!



We are learning about plankton! Plankton include organisms that drift through the seas that cannot swim and do not attach to the bottom. Plankton can be classified a variety of ways. The first way is to classify them by size. Microplankton and nannoplankton require a microscope if you want to see them because they are so tiny. Macroplankton are small, but you can see them without a microscope. Megaplankton are big enough to pick up and include things like jellies.

Another easy way to classify plankton is into plants and animals. Phytoplankton are tiny plants that photosynthesize and make their own food. Zooplankton (belong in the the zoo) and are animal plankton.

Plankton can also be classified as holoplankton and meroplankton. Holoplankton are plankton for their whole lives (forever) and meroplankton are only plankton for part of their lives. The meroplankton may be plankton when they are eggs, larvae, juveniles, all of those stages, or only some of those stages. Most of the invertebrates and fish in the ocean spend some time in their life as a plankton because it allows them to spread around the ocean and find new places to live. This photo is a meroplankton snail larvae that grows into a poisonous cone snail.This is my favorite website about plankton and it is where all my photos come from. Check out the other types of meroplankton.

Students have drawn their own plankton, tried to match meroplankton to the adult forms, and are currently designing plankton to compete in the Plankton Grand Prix - where the object is to sink slowly.

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Computer Lab Etiquette

You are in the computer lab to do work for this class. If you are not doing work, then we will have problems.

Do not pack up early. Work until the bell or until MsJ says.

SAVE OFTEN. And if you save to a key, also save it to your number. If you lose it, you will have to do it again.

If MsJ asks for your attention, stop what you are doing and listen to what she has to say.

You may watch videos about your organism through reliable websites.

You may listen to music through the computer if you have your own headphones. Rule1 MsJ cannot hear it. You get one warning. Rule2 Turn it on and listen – no million clicks and constant changing. Take both ear phones out when MsJ is talking.