1.What is meant by “carrying capacity”? o the amount of food produced in an ecos
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Question
1.What is meant by “carrying capacity”?
o the amount of food produced in an ecosystem
o the number of individuals that can be supported by an ecosystem
o the extent of energy required to maintain an ecosystem
2.The bottleneck effect occurs when
o large groups of individuals leave their home population and establish new settlements, mating only among themselves
o small groups of individuals leave their home population and establish new settlements, mating only among themselves.
o many members of a population reproduce causing too much genetic diversity within the population
o many members of a population die, resulting in a great loss of genetic diversity
3.The carrying capacity of the environment for a species is determined by
o the reproductive rate of the organism
o the number of organisms of that species
o the limited productivity of the environment and the environmental resistance to the biotic potential of the organism
o a complex
o the state and national wildlife laws pertaining to that species
4.All the members of the same species that inhabit a particular area form
o an ecosystem
o a community
o population
o an ecological niche
5.An insect that resembles the face of a snake avoids predation by
o mimicry
o warning coloration
o camouflage
o chemical defense
o mutualism
6.Equilibrium species
o have a large number of offspring
o reproduce at an early age
o have only a few offspring
7.The entire collection of genes and their alleles is a population's
o phenotype
o genotype
o dominant traits
o recessive traits
o gene pool
8.What is the difference between exponential growth and logistic growth?
o gradual increase in numbers in subsequent generations depending upon available resources versus rapidly increasing numbers regardless of available versus
o rapid increase in size of all individuals in subsequent generations versus a mixture in size of individuals
o rapidly increasing numbers in subsequent generations regardless of available versus gradual increase depending upon resources
9.Where an organism lives is its
o ecosystem
o range
o community
o home boundary
o habitat
10.What is directional selection?
o environmental influences that select against change
o environmental influences that promote two or more phenotypes versus all others
o environmental influences that promote one phenotype versus all others
11.A species that is so important to its community (such as the sea otter) that their removal can dismantle a food web is termed a _____ species
o capstone
o flagstone
o cobblestone
o keystone
o cornerstone
12.Is it possible for two closely related species to merge into one? What are some of the conditions would have to be present for this to occur?
o no, species cannot merge
o yes, only if none of their own respective species members are present
o yes, provided species are in the same area and recognize each others' mating signals
13.A disease that kills large numbers of people in a city is an example of
o density dependent factor
o density independent factor
o commensalistic factor
o a symbiotic relationship
o predation
14.Opportunistic species
o provide extensive care for their offspring
o reproduce later in life
o produce many offspring
15.Population size is believed to level off at the _______ of an environment
o population growth
o biotic potential
o environmental resistance
o doubling time
o carrying capacity
Explanation / Answer
Q1 What is meant by “carrying capacity”?
Ans: the number of individuals that can be supported by an ecosystem
Q2 The bottleneck effect occurs when?
Ans- many members of a population die, resulting in a great loss of genetic diversity
Q3 The carrying capacity of the environment for a species is determined by?
Ans - the limited productivity of the environment and the environmental resistance to the biotic potential of the organism.
Q4.All the members of the same species that inhabit a particular area form?
Ans- population.
Q5.An insect that resembles the face of a snake avoids predation by?
Ans- camouflage
Q6. Equilibrium species
Ans - have only a few offspring (equilibrium species survive unfavourable periods by living on stored food resources and reducing life processes to a minimum)
Q7 - The entire collection of genes and their alleles is a population's?
Ans gene pool
Q8.What is the difference between exponential growth and logistic growth?
Ans: rapidly increasing numbers in subsequent generations regardless of available versus gradual increase depending upon resources. (Exponential growth happens when there is a continuous birth rate in a period of time and it is not hindered because of the scarcity of food and a lot of diseases. For example, a bacterium divides into two which will result in two bacteria. These 2 further divide which results in 8 and then 16 and 32 and likewise. This process will continue till the resources run out or become scarce.In exponential growth, there is no upper limit. But in logistic growth, the growth is limited. Exponential growth happens when there is a continuous birth rate in a period of time and it is not hindered because of the scarcity of food and a lot of disease)
Q9. Where an organism lives is its
Ans- Habitat
Q10. What is directional selection?
Ans- environmental influences that promote one phenotype versus all others.
Q11. A species that is so important to its community (such as the sea otter) that their removal can dismantle a food web is termed a _____ species.
Ans- Keystone species.
Q12. Is it possible for two closely related species to merge into one? What are some of the conditions would have to be present for this to occur?
Ans- yes, provided species are in the same area and recognize each others' mating signals.
Q13. A disease that kills large numbers of people in a city is an example of
Ans- density dependent factor (more the population density more people effected)
Q14. Opportunistic species
Ans- produce many offspring. (Species characterized by high reproduction rates, rapid development, early reproduction, small body size, and uncertain adult survival.).
Q15. Population size is believed to level off at the _______ of an environment.
Ans. carrying capacity
...
:) gud luck
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