Biology: Animal Body Parts and Classification

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Questions and Answers

Name the three main body parts of the animal in Figure 1a.

a) ______________ b) ______________ c) ______________

Which part does the wings and legs are attached to?

Abdomen

Torso (correct)

Head

To which group does the animal in Figure 1a belong?

Dragonfly

Which group of squirrels stayed alive after one week?

Group Y Signup and view all the answers

Explain why the squirrels in the chosen group were still alive after a week.

Aziz put acorns for Group Y but not for Group X. Signup and view all the answers

What did Aziz learn from this experiment? Living things need

Food Signup and view all the answers

Describe one thing that Aziz did to ensure that his experiment is a fair test.

This question expects a response related to maintaining fairness in the experiment conducted by Aziz. Signup and view all the answers

State 1 property of plastic that makes it suitable for making the spectacle lens.

Transparent Signup and view all the answers

State another material that is also suitable for making the spectacles lens.

Glass Signup and view all the answers

How many days does it take for the seeds to grow roots?

4 days Signup and view all the answers

How many days does it take for the seedlings to use up the stored food in the seed leaves?

3 days Signup and view all the answers

What will happen to the seed leaves once the stored food is used up?

The seed leaves will fall off. Signup and view all the answers

Why are the fruits important for the plant to repeat its life cycle?

The fruits have seeds which helps the plant to repeat its life cycle. Signup and view all the answers

Write down the energy conversion that takes place when the circuit is closed.

Stored energy -> Electrical energy -> Light energy & Heat energy Signup and view all the answers

What will happen to the bulb if the switch is 'on'?

The bulb will light up. Signup and view all the answers

What is the use of a switch?

The switch is used to switch on or off the circuit. Signup and view all the answers

What happens to the bulb if more dry cells are added to the circuit?

The bulb will be brighter. Signup and view all the answers

What is the importance of the above information?

It emphasizes the safe handling and use of electricity. Signup and view all the answers

Write another statement that can be added to the above information.

Always use insulated tools when working with electricity. Signup and view all the answers

Study Notes

Classification of Living Things

The animal in Figure 1a is a dragonfly, and it has three main body parts: head, thorax, and abdomen.
The wings and legs are attached to the thorax.
Dragonflies belong to a group of animals without backbones.

Experiment on Squirrels

Aziz conducted an experiment to find out if squirrels need food to live.
He kept two groups of squirrels: Group Y (with acorn) and Group X (without acorn).
After one week, the squirrels in Group Y stayed alive because they had food.
The squirrels in Group Y stayed alive because they had acorn as a source of energy.
Aziz learned that living things need food to survive.
If there were no holes in the containers, the squirrels would have died due to lack of oxygen.
Aziz ensured a fair test by keeping all conditions the same for both groups except for the presence or absence of food.

Properties of Materials

Plastic is suitable for making spectacle lenses because of its transparency and strength.
Another material suitable for making spectacle lenses is glass.

Life Cycle of Plants

The life cycle of a plant consists of several stages: roots appear, shoots appear, green leaves appear, more roots and green leaves appear, flower appears, and fruits appear.
It takes 4 days for roots to appear.
It takes 3 days for shoots to appear.
The seed leaves will fall off once the stored food is used up.
Fruits are important for the plant to repeat its life cycle because they contain seeds.

Electric Circuits

The diagram shows an electrical circuit with a switch, dry cells, wires, and a bulb.
When the circuit is closed, electrical energy is converted to light and heat energy.
When the switch is "on", the bulb lights up.
The switch is used to switch on or off the circuit.
If more dry cells are added to the circuit, the bulb will be brighter.

Safety Precautions with Electricity

It is important not to touch electrical appliances with wet hands and not to repair electrical appliances oneself to avoid electrical shock.
Another safety precaution is to avoid overloading electrical outlets.

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Description

Identify and classify animal body parts and groups based on a diagram. Learn about the main body parts and characteristics of an animal without a backbone.