Primary Six Science - Classification of Living Things and Systems

Flashcards covering key primary six science concepts including living things, bird physiology, animal digestion, circulatory system, ear anatomy, and alcohol production.

What is the definition of classification of living things?

It is the grouping of living things according to their characteristics and features.

Why do living things perform excretion?

To remove metabolic waste products from the body and prevent body poisoning.

How is the gizzard of a bird adapted to grinding food?

It contains grit (small stones) that crush food and has thick muscular walls to withstand the grit.

What is the primary function of down feathers on a bird?

They insulate the bird's body to keep it warm.

What are the four stomach chambers of a ruminant animal?

Rumen, Reticulum, Omasum, and Abomasum.

What role does the abomasum play in the digestive system of a ruminant?

It acts as the true stomach where food is mixed with digestive enzymes.

How are fangs adapted for their function in venomous snakes?

They are hollow and sharp-pointed teeth used for injecting venom into prey.

What is the main function of red blood cells (erythrocytes)?

To transport oxygen throughout the body using haemoglobin.

Why is the left ventricle wall thicker than the right ventricle wall in the human heart?

Because it must pump blood to all body parts at a higher pressure.

What is the function of the Eustachian tube in the middle ear?

It balances air pressure on both sides of the eardrum and drains fluid to the back of the throat.

What process uses yeast to turn sugary juice into alcohol?

Fermentation.

Which two main physical processes are involved in the distillation of alcohol?

Evaporation and condensation.

Which part of a quill feather holds the vane in position?

The shaft (rachis).