Biology
Grade-9
Easy
Question
Mortality is responsible for fluctuation in __________.
- Population density
- Sex ratio
- Age structure
- Aestivation
Hint:
Mortality is responsible for fluctuation in population density.
The correct answer is: Population density
- Natality is described as the number of deaths occured in a particular time.
- It is calculated per 1000 population per year.
- It is an essential factor for calculating census.
- Natality is also known as death rate.
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Natality (birth rate) is denoted by _________.
Natality (birth rate) is denoted by _________.
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Which of the following process is responsible for fluctuation in population density?
Which of the following process is responsible for fluctuation in population density?
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Suggest one word for each of the following statements.
a). Here both species benefit from a relationship
b). Here two species competing for resources such as food, water, nutrients, etc._________
c). Group of similar ecosystems make up individual__________
d). The different species that live together in an ecosystem are called ___________.
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b). Here two species competing for resources such as food, water, nutrients, etc._________
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d). The different species that live together in an ecosystem are called ___________.
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Parasite like ________ feed within humans’ intestines absorbing his/her nutrients.
Parasite like ________ feed within humans’ intestines absorbing his/her nutrients.
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The community is made up of the same kind of organisms that live in the same area.
The community is made up of the same kind of organisms that live in the same area.
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Choose the odd one out
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In a pond, insects, fish, algae, animals, plants, frogs all live close to interact with each other to form ___________.
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It is an example of an ecosystem where biotic and abiotic components interact with each other.
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It is a type of community interaction.
It is a type of community interaction.
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___________ is a group of population of different species living together in an ecosystem.
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Consumption of seal by shark is an example of parasitism.
Consumption of seal by shark is an example of parasitism.
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_________ is the same species occupying a defined area during a specific time.
_________ is the same species occupying a defined area during a specific time.
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__________ interactions are those which occur between species living in close association with one another.
__________ interactions are those which occur between species living in close association with one another.
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Stretching from 10 kilometers above the Earth’s surface and diving deep as far as 10 kilometers below the surface of ocean contains our _________.
Stretching from 10 kilometers above the Earth’s surface and diving deep as far as 10 kilometers below the surface of ocean contains our _________.
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