Classification

A Mr Fedley looking at living things production

Today's Lesson

Today, we will be completing the following:• PowerPoint presentation on Being Alive• Answer some questions in Science Book• Class discussion on Classification• An Activity

Being Alive?If I was to ask you which of the following objects are alive, which ones are?

Bumble Bee

Yeast in bread while baking

Fire

E-Coli

A Plant

A Car

So what makes something alive?

What are the characteristics of being alive? They are...1. Collect energy for immediate or later use2. Takes in oxygen from the aim or water in which it

lives in3. Produces waste4. Responds to stimuli in the environment5. Has the ability to move6. Have the ability to reproduce7. Grow8. Are made up of cells

Different Types of Living ThingsYou may or may not know this, but there are two main different types of organisms.

•One type is autotrophs which produce their own food, and are commonly referred to as plants. This type of living organism produces energy directly from the sun through photosynthesis. Even though it produces it’s own food, it still requires other living organisms to complete tasks for it that it cant do itself (like pollination).•Another type of living organism is a heterotroph, which is commonly referred to as an animal. These living organisms cannot produce their own food, and must get it from an autotroph (plant) or another heterotroph (animal). Most heterotrophs are warm blooded, but some are not like snakes and lizards.

Plants produce energy through using the energy of the sun to convert carbon dioxide and water into sugar and oxygen (photosynthesis)

Heterotrophs cannot produce their own food

Living Things Use Oxygen

Plants convert Carbon Dioxide into Oxygen

Animals convert Oxygen to Carbon Dioxide

•You may know this, but almost all living animals require Oxygen for respiration. It’s by product is Carbon Dioxide.•Plants require Carbon Dioxide for respiration. It’s by product is Oxygen•Because of this, both plants and animals rely on one another to live. This is because plants give off the oxygen we need to live, and animals give off the Carbon Dioxide plants need to live

Producing Waste & Responding to Stimuli

• All living things produce some type of waste. Many animals produce urea and faecal matter. This waste is then commonly used by other living organisms (like manure for plants). Also, Carbon Dioxide is a waste produce for animals and Oxygen is a waste product .

• All living things respond to stimuli (even plants). If we hear a sudden loud noise, we may jump suddenly. Your also now responding to stimuli by putting up your hands.

• Plants also respond to stimuli but it may not be as noticeable. For example, flowers open when there is sunlight but close when the sun sets.

All different living organisms respond to stimuli in a different way. For example, a cat might see a bird and think lunch. It may also see something else and be scared.

Living Things Move & Reproduce• Even though some students at the moment are moving

as much as active as a corpse, they are still moving in some way. The same is true for all other living organisms. Animals move when they need to, while plants also move when required. For example, flowers opens and closes depending on the sun.

• All living things need to also reproduce. If they cannot reproduce, they will end up dying as their cells ware out. Most living things reproduce through mitosis, such as your skin, hair, bark, leaves etc.

• Some living things produce through meiosis (called sexual reproduction – stop laughing). This is when information from different living organisms come together.

Flowers move when the sun shines by

opening

Most living things reproduce through mitosis or meiosis

Living Things Grow & Are Made of Cells

• All living things grow in some form or another. Animals get larger as they get older, and trees grow taller as they get older as well.

• If a living organism does not grow, then it is destined to die. Even animals that are not getting larger continue to grow in some way. For example, as specific cells in your body die, they continue to grow new cells. Did you also know that you nose and ears continue to grow as you get older!!

• Also, all living organisms are made out of cells. Some living organisms are made out of just one cell (eg bacteria), but some living organisms are made out of billions of cells (eg humans).

Dichotomous Keys

• Dichotomous keys are used to classify different things.

• You can normally classify them with a yes or no question which is easy to answer.

• We will now complete a small activity of classifying the things you brought to class

What to do next...

• For the next 20 minutes, we will be completing the questions below:– What are the characteristics of being alive? Give an example

for each one.– How is an autotroph different than a heterotrogh. Give 2

examples of each which are not on the PPT– What type of waste do living things normally make? Give

examples.– How can living things react to stimuli? Give some examples.– What are the 2 different ways living things can reproduce?

Continued

• Extension:– What are all living things made out of?– Find out what the name of these two types of cells

are and give some examples.

– We will now complete an activity on dichotomous keys outside.