Monday, January 21, 2013

Big Idea 1

The neck of the giraffe is an example of an adaptation in an animal.  The long neck allows it to reach food sources that are out of reach to other animals.

Amniotic eggs contain a yolk to nourish the developing animal.  This chicken egg is an example of an amniotic egg because it contains a yolk.
This (fake) plant is an example of an angiosperm.  An angiosperm is any flowering plant, angiosperms contain their seeds in fruit.
This (also fake) pinecone is an example of gymnosperm cone.  Gymnosperms have exposed seeds that are found on structures often modified to form cones.
This earthworm is part of the phylum annelida.  Annelids are classified by the presence of segments.  Annelids can reproduce both sexually and asexually.  There are over 22,000 species alive today.
This piece of firewood has fungus growing on it.  Fungi are eukaryotes that have many uses to humans such as making bread rise and fermenting alcohol.  Fungi, while they look similar to plants, are more closely related to animals.
This goliath bird eating spider is in the class of Arachnids.  Arachnids are eight-legged invertebrates with an external exoskeleton and a internal structure of cartilage.
This red river hog that I saw at the zoo belongs to the phylum chordata.  Chordates are defined as animals possessing a notochord and a hollow dorsal nerve chord.  All mammals belong to this phylum because all mammals possess backbones.

This bird is an example of bilateral symmetry.  Bilateral symmetry is defined as an organism that can be divided into equivalent left and right halves
 The yeast used in baking bread to make it rise is a unicellular organism.  A unicellular organism is an organism that consists of only one cell.

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