12 Interactions Within Ecosystems Flashcards
What are the 4 actions that humans do that impact the environment?
1) Wasting food
2) Using more electricity
3) Using more water
4) Creating excessive wastes
What are the 4 actions human can take to reduce their impact on the environment?
1) Reducing the use of fossil fuels
2) Reducing consumption
3) Introducing environmentally friendly practices
4) Reforestation
What are the 6 physical factors that affect the environment of the habitats of organisms?
Physical factors are things that can be measured by instruments such as data loggers and probes.
1) air
2) water
3) temperature
4) light
5) minerals
6) acidity or alkalinity
What are structural adaptations of an organism?
They are the physical characteristics of an organism that helps them survive in their habitat.
e.g. The scales of a crocodile are hard and thick. They protect the crocodile from heat and injury.
What are behavioural adaptations of an organism?
They are the behaviours of an organism that helps them survive in their habitat.
e.g. The sand bubble crab burrows into sand to escape from the heat and predators.
What is a population?
Organisms of the same kind living in the same environment.
What is a community?
Different populations of plants and animals living and interacting in an environment.
What is an ecosystem?
It is the interaction between a community and its environment.
What are the 3 types of interrelationships in an ecosystem?
Interrelationships are how the organisms interacted with one another.
1) Predator-prey
2) mutualism
3) parasitism
What is predator-prey relationship?
Give one example of predator-prey relationship to help you with the answer.
Predators hunt and kill their prey for food.
e.g. Eagle hunting mouse for food.
What is mutualism?
Give one example of mutualism to help you with the answer.
A relationship in which two or more organisms benefit or support one another.
e.g. clown fish and sea anemone
What is parasitism?
Give one example of parasitism to help you with the answer.
A relationship in which one organism benefits by harming another organism without killing it.
e.g. roundworms in the large intestines of human
Look at the food chain in the picture.
What does a food chain show?
It shows the feeding relationships between organisms.
Look at the food chain in the picture.
Which organism is a producer?
grass
Look at the food chain in the picture.
Explain why grass is a producer.
Grass make food using carbon dioxide and water in the presence of light during photosynthesis.
Look at the food chain in the picture.
Which organism is a primary consumer?
grasshopper
Look at the food chain in the picture.
Explain why grasshopper is a primary consumer.
Grasshopper feeds on producers to obtain energy and nutrients.
Look at the food chain in the picture.
Which organism is a secondary consumer?
frog
Look at the food chain in the picture.
Explain why frog is a secondary consumer.
Frog feeds on the primary consumers to obtain energy and nutrients.
Look at the food chain in the picture.
Which organism is a tertiary consumer?
snake
Look at the food chain in the picture.
Explain why snake is a tertiary consumer.
Snake feeds on the secondary consumers to obtain energy and nutrients.
This is a picture of a food web.
Identify 4 producers in this food web.
corn, flowering plant, lavenders and mango
Producers are always at the start of a food web or food chain.
This is a picture of a food web.
State and explain what will happen to the population of rats if the population of grasshoppers decreases drastically.
The population of rats will decrease as there are less food available for the rats.
Producers are always at the start of a food web or food chain.
