Ecology - Ecosystems YR9 science exam

Select all of the following that are levels of an organisation

What is an ecosystem

Interacting groups of abiotic and biotic factors in an area

Organisms of a single species living together

The organisms living in an area

What are functional adaptions

changes to an animals physical features such as shape, size and parts

adjust the working of an organism's body

changes to how the organisms behaves.

Define carrying capacity

The selection of favourable characteristics

The maximum number of offspring that each member of a population can produce.

The size of a population that can live in an environment without doing any harm to that environment

Define Density INDEPENDENT factors

Factors that affect organisms and get worse as population increases.

Factors that affect organisms and do not get worse as population increases.

What is interspecific competion

Competition for resources between individuals of different species.

Competition between individuals of the same species.

What is an hetrotroph

an organism thats able to make their own food

an organism thats unable to make their own food. Therefore they have to eat it

What is mimicry

allows an animal to look, sound, or act like another animal to fool predator

Allows an animal to blend into its environment.

allows an animals to go into a deep sleep in which animal's body temp droops, body activities are slowed to conserve energy.

Princess Katie and her best friend Princess Kristina conquered a new area of land. This land has a big stream in the middle filled with animals. To investigate their new land more they made this simple food web diagram. Using the food web above, which of the following statements are false?

Crabs eat menhaden

shrimp eat lobster and crabs

Tuna eat sardines

sharks eat tuna

Imogen had 100 mice. Some of them were white, black, blonde and brown. Imogen's carpet was brown, so the brown mice were able to camouflage. This meant that when Imogen's hungry cat hunted the mice, he was never able to find the brown mice. What is this called?

natural selection

favorable characteristic

Amelie got a new pet lizard, Jerry, however this lizard used to live in the wild. While Jerry lived in the wild he would have to hunt his own food but now amelie feeds him every night. So he has adapted to his this new lifestyle. What type of adaption is this?

behavioural

functional

structual

Izzy went to the park and recorded all the abiotic and biotic factors she could see but she didn't know what category the following things were; water, grass, mushrooms. Identify what each object is.

abiotic, biotic, biotic

abiotic, biotic, abiotic

biotic, biotic, abiotic

biotic, abiotic, biotic

What is the first step in the carbon cycle?

Plants and algae make sugars, fats and proteins from CD, water and photosynthesis

When the plant dies they break down and become part of the soil

When coal and oils are mined and burnt, carbon is returned to the air (greenhouse gases)

Animals breathe oxogen in and carbon dioxide out. The CD is a waste product

What is the second step in the carbon cycle

Plants and algae make sugars, fats and proteins from CD, water and photosynthesis

When the plant dies they break down and become part of the soil

When coal and oils are mined and burnt, carbon is returned to the air (greenhouse gases)

Animals breathe oxogen in and carbon dioxide out. The CD is a waste product

In this food chain, what trophic level is the fox?

Primary consumer

Secondary consumer

Producer

Tertiary consumer