A plant is classified as living or non-living?
Living
How many options are in each step of a dichotomous key?
2
Name an abiotic factor
sunlight, atmosphere, air, wind, water, temperature.
What animal eats only producers?
Herbivore
What do you call a species that is introduced to a new ecosystem and takes over.
Invasive species.
Identify the genus of the following organism.
Felis catus
Cat
What is a dichotomous key?
A key that helps in identifying organisms.
In a food chain, what do the arrows represent?
The direction that energy flows.
How much energy moves up trophic levels in an energy pyramid?
10%
What is biodiversity?
The different species in an ecosystem.
Name 5 characteristics of all living things.
Movement, Growth, Respiration, Reproduction, Sensitivity, Excretion, nutrition.
Dichotomous keys are used to identify different organisms based on their observable features.
Explain what a producer is, give an example.
A producer is an organism that creates it's own energy, such as grass or a tree.
What is a food web?
A food web is a diagram demonstrating the energy transfers between organisms throughout an ecosystem. It is made up of multiple food chains.
Name 3 different invasive species in Australia.
Crown of thorns starfish, camels, toads, rabbits.
Kingdoms are the largest group of the Linnean system. What are 6 Kingdoms?
Animalia, Plantae, fungi, protista, Bacteria and Archaebacteria
Explain what a strong feature is.
A strong feature is a structural feature that doesn't change over time or between individuals of the same species. E.g. has fur.
Create a food chain with the follow organisms. hawk, grass, snake, frog, grasshopper.
Grass, grasshopper, frog, snake, hawk.
Describe the differences and similarities between a predator and a scavenger
Differences - predator catch prey, scavengers eat prey that have already died.
Similarities - both are consumers.
What can happen if you introduce a new species into a food web?
It can throw out the balance of the food web. While some predators may have more to eat, there can be greater competition for resources for others, and it can result in food sources being completely depleted.
Organisms belonging to the same Phylum have similar characteristics. What are the characteristics of organisms belonging to the Phylum Mammalia?
warm-blooded, have hair or fur, give birth to live young
Explain how you use a dichotomous key.
In a dichotomous key, you are given two options. You choose one option based on the observable features of the organism. You continue to choose from two options until you find the name of the organism at the end of the key.
Explain the purpose of a food chain and the information it provides.
A food chain is a representation of which organisms it which other organisms in an ecosystem. The purpose of this is to demonstrate energy flows through an ecosystem from producers to apex predator.
Explain what would happen if you removed all but one primary consumer from a food web.
If all but one primary consumer is removed from the food web then the last primary consumer population would increase, as would any secondary or tertiary consumers of this species. Any secondary consumers that don't feed on this species would decrease as well as specific producers favoured by this species. Competition could increase between secondary and tertiary consumer for a less varied food source.
Biodiversity is important because it helps to make ecosystems more resilient to change. When ecosystems can stay healthier during changes it helps to keep the world balanced and lessons the impact of other species.