Ecology Part 1: Question Preview (ID: 18304)

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____ are things in an environment that determine how many individuals in a population an ecosystem can support.
a) carrying capacity b) limiting factors c) community d) population
The ____ is the number of individuals that a given environment can support
a) limiting factor b) population c) community d) carrying capacity
A ____ is a group of organisms of the same species that all live in the same area.
a) species b) community c) population d) biosphere
Which of the following are biotic factors in an ecosystem?
a) bacteria, algae, trees b) sunlight, water, rocks c) fish, water, temperature d) grass, deer, oxygen
Which of the following are abiotic factors in an ecosystem?
a) water, sunlight, trees b) sunflowers, rabbits, deer c) soil, temperature, sunlight d) grass, grasshoppers, water
What is an ecosystem?
a) all the living and non-living things in an area b) only the living things in an area c) only the non-living things in an area d) the role a species plays in an area
A ____ is the role a species occupies or how it fits into the environment.
a) abiotic factor b) niche c) habitat d) biotic factor
The place where an organism lives and finds food is called its ____.
a) niche b) abiotic factor c) biotic factor d) habitat
what is a species
a) a groups of organisms living in an area that can produce fertile offspring b) the role a species plays c) all living and non-living parts of an ecosystem d) a group of all the same species living in the same area
All of the following are density-dependent limiting factors except ____.
a) disease b) predation c) competition for food d) natural disasters
All of the following are density-independent limiting factors except ____.
a) parasite b) drought c) deforestation d) behavior of an organism
Protozoa live in the termite intestines. They break down wood the termite eats while the termite provides food and shelter to the protozoa. This is an example of ____.
a) commensalism b) parasitism c) mutualism d) competition
Barnacles hitch a ride on whales but do not affect the whale in anyway. This is an example of ____.
a) commensalism b) parasitism c) mutualism d) competition
A tape worm lives inside an animal host's intestines stealing nutrients from the animal host. This is an example of ____.
a) commensalism b) parasitism c) mutualism d) competition
The herring fish and alaskan pollock both eat silver shiners. This is an example of ____.
a) commensalism b) parasitism c) mutualism d) competition
Polar bears prey on sea lions. If the population of polar bears decreases then the population of sea lions will ____.
a) decrease b) increase c) stay the same d) decrease slightly
In a food web or food chain, the arrow represents ____.
a) energy transferred from one organism to the next b) that energy is destroyed c) that energy is created d) nothing
All of the following apply to organisms that make their own food except ____.
a) consumer b) autotroph c) producer d) 1st organism in a food chain
What are organism that cannot make their own food called?
a) producers or consumers b) autotrophs or producers c) hetertrophs or consumers d) producers or herterotrophs
In the following food chain, which organism is the secondary consumer? grass - grasshopper - lizard - snake
a) grass b) snake c) grasshopper d) lizard
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