HARD
Earn 100

Comment on the human growth pyramid.

Important Questions on Organisms and their Environment

EASY
Biology>Ecology>Organisms and their Environment>Population Size
Which of the following is correct for r-selected species?
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Biology>Ecology>Organisms and their Environment>Population Size
Explain the following term:
Population density.
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Biology>Ecology>Organisms and their Environment>Population Size
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt=rN1-N/K:
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Biology>Ecology>Organisms and their Environment>Population Size
A few rabbits are introduced in an un-inhabited land with plenty of food. If these rabbits breed in the absence of any disease, natural calamity and predation, which one of the following graphs best represents their population growth?
EASY
Biology>Ecology>Organisms and their Environment>Population Size
In a growing population of the country,
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Biology>Ecology>Organisms and their Environment>Population Size
Many population colonising a new habitat show a logistic population growth pattern over time, as shown in the figure below.

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In such a population, the POPULATION growth rate:
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Biology>Ecology>Organisms and their Environment>Population Size
Natality refers to
EASY
Biology>Ecology>Organisms and their Environment>Population Size

In the following equation of Verhulst - Pearl logistic growth, the letter 'r' denotes ___ .

dNdt=rNK-NK

HARD
Biology>Ecology>Organisms and their Environment>Population Size
If 10 individuals in a laboratory population of 100 mice die during the period of one year, the death rate in this population will be:
EASY
Biology>Ecology>Organisms and their Environment>Population Size

Define the following:

Carrying capacity

HARD
Biology>Ecology>Organisms and their Environment>Population Size
Asymptote is a logistic growth curve is obtained when
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Biology>Ecology>Organisms and their Environment>Population Size
What are the three types of age pyramids for the human population?
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Biology>Ecology>Organisms and their Environment>Population Size
Match the following and select the correct option:
(a) Earthworm (p) Pioneer species
(b) Succession (q) Detrivore
(c) Ecosystem service (r) Natality
(d) Population growth (s) Pollination
EASY
Biology>Ecology>Organisms and their Environment>Population Size
Individuals of one kind occupying a particular geographic area at a given time are called
EASY
Biology>Ecology>Organisms and their Environment>Population Size
Which of the following is not an attribute of a population?
EASY
Biology>Ecology>Organisms and their Environment>Population Size
The following equation describes the exponential growth of a population
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Biology>Ecology>Organisms and their Environment>Population Size

The shape of the pyramids reflects the growth status of the population. Identify the type of age pyramid represented below for human population.

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MEDIUM
Biology>Ecology>Organisms and their Environment>Population Size
Define Brood parasitism.
EASY
Biology>Ecology>Organisms and their Environment>Population Size
A population has more than 50% in the post-reproductive age group; accordingly, such a population is:
MEDIUM
Biology>Ecology>Organisms and their Environment>Population Size
“India is a country of youngesters” on this basis, if age pyramid is made. What type of pyramid it will be?