Tag Archive | "habitat community"

Need Biology Help Please!?


1)Plasmids are transferred from one bacterium to another through
conjugation.
chemoautotrophs.
flagellae.
bacterial capsules.
2)The origin of membrane-enclosed cells is thought to include the formation of
extremophiles.
microspheres.
ribosomes.
eukaryotes.
3)Two species occupying the same niche would be __________ with each other.
in competition
at peace
coevolving
in harmony
4)The mineralized remains of an organism is called a(n)
fossil.
homologous feature.
adaptation.
population.
5)Calling a species by its genus and species name, such as Homo sapiens, is using
cladistics.
binomial nomenclature.
phylogeny.
taxonomy.
6)The isolation of two groups within a population from each other, and their adaptation to the point of being no longer able to interbreed is called
population genetics
gradualism.
speciation.
convergence.
7)The ecological role of a species is its
niche.
energy pyramid.
habitat.
community.
8)A classification system based solely on derived traits is called
phylogeny.
cladistics.
domains.
genetic drift.
9)The theory that organelles originated as separate prokaryotic symbionts is called
relative dating.
endosymbiosis.
mass extinctions.
geologic time.
10)Comparing a new fossil to a previously-dated fossil in order to determine its age is a form of
relative dating.
radiometric dating.
half-life.
geologic time.
11)Applying crystal violet stain, followed by iodine, alcohol, and safranin, a bacterial culture looked purple. The bacteria was
transduced.
Gram positive.
transformed.
Gram negative.
12)All the members of one species in a given area is its
biodiversity.
carrying capacity.
growth.
population.
13)The disappearance of a species from the Earth is referred to as
deforestation.
extinction
biodiversity.
recycling.
14)When a population does not show any net change in its gene pool, it is
using random mating.
in genetic equilibrium.
about to go extinct.
isolated reproductively.
Please help me.

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Ecology Project Help!?


hey guys so i have this ecology project about the ” Rain forest ” and the paper says i need to pick some populations ( either a plant or animal or both ) then i have to research the habitat, community, niche, limmiting factors, and adaptation features.
but i really dont know what to choose !!!! i wanted to choose the slender loris but i didnt find lots of info about it. can someone please find me a plant and another animal ( but if you found a website that has enough information for the slender loris could you please give the link )
THANKYOU SO SO SO SO SO MUCH X_X PLEASE PLEASE TRY TO HELP I NEED TO HAND THIS IN NEXT WEEK : (

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Biology Unit Test Help…..?


1.
Cougars are predators that often eat weakened or diseased animals. This is a description of the _____ of cougars.
(1 point)
•habitat
•community
•niche
•none of these
3.
____________________ are characterized by complex food webs, many different species of organisms, and little or no succession.
(1 point)
4.
The first organisms to appear in an area undergoing succession are known as ____________________.
(1 point)
5.
The effect of movement of people between counties has _____ effect on total world population.
(1 point)
•a damaging
•little
•a great
no

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Check My Science Answers Please Im Very Confident With My Choices (:?


two stars beside mine im trying to do really well so i chose the ones that i can remember and the ones that i cant i tried to best guess
1.
Sea stars live in saltwater ecosystems. Some species live in shallow tidal pools, while others live in the deepest parts of the oceans. This is a description of the ____ of sea stars. (1 point)
* habitat**
* community
* niche
* none of these
2.
Cougars are predators that often eat weakened or diseased animals. This is a description of the _____ of cougars.
(1 point)
* habitat
* community
* niche**
* none of these
3.
Nitrogen is released to the abiotic parts of the biosphere from the processes of death and _______. (1 point)
* decay by bacteria**
* infiltration of groundwater
* runoff
* lightning in storm clouds**
4.
Referring to Figure 2-1, energy flows from ______.
Figure 2-1 Energy Flow
Figure 2-1 (1 point)
* coyotes to grasses
* cats to mice
* mice to cats**
* coyotes to cats
5.
Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through _______. (1 point)
* burning of forests
* photosynthesis
* combustion of fossil fuels
* all of these**
6.
What type of cycle is depicted in Figure 2-10?
Figure 2-10 Cycle (1 point)
* carbon
* water**
* phosphorus
* nitrogen
7.
Which organism shown in the pyramid shown in Figure 2-9 receives the highest percentage of energy from the sun?
Figure 2-9 Pyramid
(1 point)
* fox
* birds
* grasshoppers
* grass**
8.
A girl notices her guppies reproduce most when her fish tank water is slightly alkaline. They stop reproducing if the water becomes acidic or if the water becomes too alkaline. This is an example of ____. (1 point)
* secondary succession
* zones of tolerance and intolerance
* communities
* intertidal zones**
9.
The stable ecosystem that develops due to succession ______. (1 point)
* is called a niche
* is always a forest
* is called a climax community**
* never changes
10.
What type of succession is most likely to happen in a burned forest? (1 point)
* primary
* secondary**
* tertiary
* climax
11.
You take a sample of species from the area labeled A in Figure 3-7. What would you expect to find?
Figure 3-7 Pond Ecosystem (1 point)
* almost no life
* great species diversity
* organisms that need very little oxygen
* one dominant species of fish**
12.
What type of species would be most likely found in the area labeled D in Figure 3-7? (1 point)
* one that requires plenty of oxygen
* plants that require light
* amphibians that need a warm habitat**
* decomposers that feed on dead organisms
13.
The absence of permafrost and the presence of coniferous trees as the dominant climax plants characterize the ________. (1 point)
* taiga
* tundra
* grassland
* desert**
14.
The first organisms to appear in an area undergoing succession are known as ________. (1 point)
* predators
* pioneer species
* parasites
* organisms**

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