Ecology & Classification

If there are 100 KJ of energy available at the secondary consumer level, how many KJ of energy are available at the producer level?

• 10 KJ

• 1,000 KJ

• 10,000 KJ

• 1 KJ

Tapeworms reside in human intestine and take nutrients from the human

• symbiosis

• parasitism

• mutualism

• commensalism

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator

• Autotroph

• Producer

• Decomposer

The ecological role an organism performs in their specific environment is considered the organism's...

• Habitat

• Population

• Biome

• Niche

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show what direction the energy is flowing between organisms. 

• They represent how water is transferred within a habitat.

The populations of which organisms will most likely increase as a result of a disease that suddenly reduced the population of Texas horned lizards?

• Grasses and ants

• Ants and grasshoppers

• Grasshoppers and Texas Cottonmouths

• Texas cottonmouths and red shouldered hawks

Match the following

• This is an organism that supplies matter and energy, also known as an autotroph.

• Decomposer

• This is an organism that relies on other organisms for its food and energy supply; heterotroph

• Producer

• This is an animal that lives by preying on other animals.

• Predator

• This is an organism that breaks down and gains nutrients from dead organisms.

• Consumer

In any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called ________ while organisms that recycle the nutrients trapped in dead organisms are collectively called ________.

• producers;consumers

• producers; decomposers

• consumers; decomposers

Barnacles grow on whales.  Whales give the barnacles a place to live but the barnacles do not help or harm the whale.  Which type of relationship is this?

• commensalism
• mutualism
• parasitiesm

What happens when different species try to occupy the same niche?

• The species compete with each other

• The species cooperate with each other

• The species coexist with each other

• All of the above