Tuesday, January 18, 2011

Adaptation Group 2

1. They have pneumatophores that are poked up through the surface of the mud so that they can absorb oxygen from the air and water and transfer it directly into the roots.

2. Xerophytes includes adaptations such as waxing leaf coatings and the ability to drop leaves during prolonged droughts. This is to prevent water loss during dry periods.

3. Polar bears have a thick layer of fur and under that is a layer of fats. They also have fur on their paws to protect them against the cold surfaces. They also have black skin to absorb heat.

4. The deep-sea anglerfish has a photophores (light-giving organ) on its esca (bait). This helps it to find its way around in the dark and also attract the deep-sea fishes to it. Also, the mouth reflexes is connected to the esca, so when something touches the esca it will automatically close.

5. If the salt water fish were to be put in fresh water then their high salt content inside their bodies (to prevent too much salt diffusing into their bodies) will have it diffusing out down the concentration gradient; killing them. If the fresh water fish were to be put in salt water then their low salt content inside their bodies (to prevent too much salt diffusing out of their bodies) will have it diffusing in again down the concentration gradient; killing them.


Sources:
http://www.deepseamonsters.com/component/content/article/50-deep-sea-angler-fish.html
www.britannica.com/EBchecked/topic/650706/xerophyte
http://www.nswseakayaker.asn.au/mag/47/mangroves.html
http://animals.nationalgeographic.com/animals/mammals/polar-bear/
http://www.answerbag.com/q_view/34032


Done By: Marcus, Elgin Patt, Wai Hang, Emily, Darius

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