Enviro Sci ecology review

The termites niche is as a ​ (a)   .

• decomposer
• scavenger
• omnivore
• herbivore
• gross bug

An autotroph is an organism that ​ (a)   , these argansims are also (b)   .

• producers
• makes its own food
• consumers
• must eat their food

You would find a ______ at the top of a trophic pyramid.

• primary consumer

• apex consumer

• producer

• omnivore

How much energy is avaliable at the top level in video's trophic pyramid if the bottom level has 90,000 kilocalories of energy available?

• 90 kcal

• 9 kcal

• 900 kcal

• 0.9 kcal

• 9,000 kcal

Which consumer level is the snake in the eating from the food web from the video?

• secondary consumer

• tertiary (3rd) consumer

• secondary or tertiary consumer depending on which organism is eaten

• primary consumer

• primary or secondary depending on which organism is being eaten

What type of organisms break down organic matter in an ecosystem?

• scavengers

• decomposers

• consumers

• producers

Organize these options into the right categories

Groups:

(a) Commensalism

,

(b) Parasitism

,

(c) Mutualism

• Insects living in the burrows of larger animals

• Heartworms in dogs
• Tapeworms living in the intestines of mammals
• Lice infesting human hair
• Remoras attaching to sharks for transportation

• Mistletoe extracting nutrients from trees
• One organism benifits, the other is neither harmed or helped

• Cleaner fish removing parasites from larger fish

• Oxpeckers eating ticks off of large mammals

• Fleas feeding on the blood of dogs
• Ants protecting aphids in exchange for honeydew

• Birds nesting in trees without affecting the tree

• Barnacles on whales

• Bees pollinating flowers while collecting nectar

• Clownfish living among sea anemones for protection

(a)   is the process of converting atmospheric nitrogen into a usable form while​ (b)   converts nitrogen back into the atmospheric form.

• Nitrogen fixiation
• denitrification

What process uses carbon dioxide (CO₂) and is preformed by many producers?

• cellular resperation

• photosynthesis

• nitrogen fixing

• decomposition

What term below includes all the different organisms on Earth?

• biodiversity

• decomplsers

• producers

• consumers