Unit 1
The usage of roots
Roots absorb water and help to hold the plant in the ground.
True or false?
All living organisms are made of cells?
True
Where a group of organisms live
Habitat
What is a species?
A species is a group of organisms that have the same characteristics, and that can breed with one another to produce fertile offspring.
What does the nervous system do?
It allows all parts of the body to communicate.
The bone that protects the brain
What is cranium?
What are micro-organisms?
Living organisms that are too small to see with the naked eye.
Why is introducing new species harmful to the habitat.
The animal may not have any predators and use all the resources until they are gone. Other species may become extinct.
What are the four major groups of plants?
Mosses, ferns, conifers and flowering plants.
What is pollution?
Pollution is adding harmful things to the environment.
What does the digestive system do?
It break down food so that is can be absorbed into the blood. 🩸
Three things in animal cells
cellmembrane
cytoplasm
nucleus
What is the first organism in a food chain?
It is always a plant.
Characteristics of Amphibians.
The adult live on land and breathe using lungs
Four limbs lay egges in the water (breathe using gills)
smooth skin without scales
What do plant cell in light contain?
Chloroplasts
Place where a plant makes it's own food.
What are leaves?
What are the 7 characteristics of live?
Notrition, Growth, Movement, Sensitivity, Excreation, Reproduction, Resiration are the 7 characteristics of life.
What does arrows in the food chain show?
It shows the energy passing from one thing to another.
What are the characteristic of Crustaceans?
1. Tough exoskeleton
2. More than four pairs of jointed legs
3. Two pairs of antennae
What are the muscle that are pulling in opposite directions called?
Antagonistic muscles
How are muscles joined to bones?
Muscles joined to bones by tendons.
Name at least 4 objects in a plant cell.
cell wall
cell membrane
cytoplasm
nucleus
large vacuole
chloroplast
What are renewable energy resources? What are examples of them?
Renewable energy resource is one that will not run out.
Wind, plants and sunlight are renewable energy resources
How are Arthropods different from Myriapods?
Myriapods don't have a skeleton on the ouside of their bodies.
What class is the sea turtle in?
Reptiles