FREE BIOLOGY AND STUDY GAMES ABOUT ENERGY IN

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FREE BIOLOGY AND STUDY GAMES ABOUT ENERGY IN

ECOSYSTEM EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -34 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: heterotrophs that prey on other heterotrophs are called

Answer:

carnivores Question 2: Describe chemoautotrophs or autotrophs that do chemosynthesis ( how do they get energy and where do they live)

Answer:

the chemosynthetic autotrophs use chemicals to make their food. The bacteria that live in the hydrothermal vents use hydrogen sulfide from the vents to make food

Question 3: Which organisms EAT FRAGMENTS OF DEAD ORGANISMS in an ecosystem

Answer:

detritivores

Question 4: Each step of a food chain or food web is called a/an

Answer:

trophic level (TROH fihk)

Question 5: organisms that get energy by consuming other organisms are?

Answer:

heterotrophs also called consumers

Question 6: What makes up the first trophic level in all ecosystems

Answer:

autotrophs

Question 7: What are the three types of ecological pyramids

Answer:

pyramid of energy, pyramid of biomass, and pyramid of numbers Question 8: Give two names for organisms that make their own food in an ecosystem

Answer:

autotrophs or producers ( sometimes primary producers) Question 9: where do organisms at each trophic level( except the first) get their energy ?

Answer:

each level gets their energy from the trophic level before it.. so the 2nd trophic level gets it from the autotrophs on the 1st trophic level

... and the organisms on the 3rd trophic level get their energy from the 2nd Question 10: what model represents the many interconnected food chains and pathways in which energy flows through a group of organisms

Answer:

food web

Question 11: Name two models of energy flow...

Answer:

food chain and food web Question 12: On a food chain, what represents the one- way energy flow that typically starts with an autotroph and moves to heterotrophs

Answer:

arrows

Question 13: What model of energy flowing through an ecosystem looks like a triangle ... it also looks like something in egypt

Answer:

ecological pyramids

Question 14: A lynx consuming an arctic hare is a/an

Answer:

carnivore Question 15: what is the general trend in energy, biomass, and numbers going from autotrophs to 2nd level consumers... or 3rd level consumers

Answer:

IT DECREASES

Question 16: Describe two types of autotrophs

Answer:

one group does photosynthesis ( photoautotrophs).. they have chlorophyll that absorbs energy from light and convert carbon dioxide and water to glucose ( which provides food).. the other group of autotrophs are are chemoautotrophs(later) Question 17: What organisms in an ecosystem are the foundation because they make energy available for all other organisms in an ecosystem

Answer:

autotrophs

Question 18: Name several detritivores

Answer:

worms, aquatic insects ( a few that we know live in estuaries.. crabs, oysters, crayfish) Question 19: plants and algae or photosynthetic bacteria are classified as ___ when obtaining their energy

Answer:

autotrophs ( photoautotrophs) autotrophs that do photosynthesis

Question 20: fungi that obtain food energy from a dead log recycle materials in dead organisms are are called

Answer:

decomposers ( a type of heterotroph)

Question 21: How do organisms at the first trophic level get their energy

Answer:

from the sun or chemicals

Question 22: Which organisms BREAK DOWN DEAD ORGANISMS BY RELEASING DIGESTIVE

ENZYMES...

Answer:

decomposers

Question 23: cows, rabbits, or grasshoppers are called ? in a food chain

Answer:

herbivores or primary consumers Question 24: ecological pyramids show ____ at each level ... they show the various ______ levels

Answer:

Trophic levels

Question 25: heterotrophs that eat only plants are specifically called ?

Answer:

herbivores they are also primary consumers Question 26: What happens to the energy that an organisms obtains from the organism it eats or from the autotroph?

Answer:

each organism uses a portion of the energy for cellular processes ( building new cells etc).. the remaining energy is released into the surrounding environment and is not longer available ( lost as heat)..