Adaption

http://bioevolution.tribe.net/photos/e22c3f31-099e-456f-9506-de0f692cbef9

Today’s Lesson

• Recap of last lesson• Different Habitats• What Is Adaption?

Cell Basics

• Most living things are made up of cells. Some are made up of a single cell, while some have billions of cells such as humans.

Reproduction

• There are two main types of reproducing:– Asexual Reproduction– Sexual Reproduction

• For asexual reproduction, there is only one parent. They have exactly the same genes and are called clones.

Reproduction #2

• In sexual reproduction, there are two parents. The sex organs make sex cells called gametes.

• The male sex cell are called sperm and are made in the testes

• The female sex cells are called eggs and are stored or made in the ovaries

Continued• The sperm and the egg will come together to

make a zygote, which is the first cell.• All cells will now reproduce through asexual

reproduction until we have specialized cells (such as skin, brain, heart etc).

Questions

1. Name the two different ways cells reproduce. How are they different?

2. Cells can divide in two different ways. Briefly describe how this can be done for each cell reproduction type.

Habitats

• Many places of earth may have differences in it’s environment. For example there may be different amounts of sunlight, temperature, water, nutrients, weather etc.

• These different areas are called biospheres. Different animals live in different biospheres. For example, you will not see a Polar Bear (thick fur) living long in the Sahara Desert (hot and dry)

http://www.bio.miami.edu/ecosummer/lectures/lec_biomes.html

More Info

• Specific animals and plants tend to live in specific areas. For example Koalas need Eucalyptus leaves and frogs need a source of water. Take these away and you won’t have the animal.

• A habitat is a community of organisms that requires each other to survive.

Questions

1. Name three different biomes that can be found in Japan. Also give one example of an animal that may live there.

2. Give one example of a habitat near Yokohama. Name at least 5 organisms which form part of that habitat.

Adaptions

• Each organism is adapted to live in the habitat where it is found.

• For example, some cactus plants look like spiky balls to protect it’s water from other animals.

• In general, animals tend to adapt to their physical environment. This gives them a better chance for survival and reproduction.

Questions

• Name two animals which are expertly suited to the environment and explain why.

• Name two animals which would not be suited to a specific environment and explain why.