Number of individuals leaving the habitat

Number of individuals entering a habitat

The population is defined as the number of organisms of the same species that live in a particular geographic area at the same time, with the capacity of interbreeding among themselves. The change in the population of a species depends on its natality, mortality, immigration and emigration.

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Define population dispersal.

Important Questions on Ecology and Environment

EASY

Biology>Ecology>Ecology and Environment>Population

In a growing population of the country,

EASY

Biology>Ecology>Ecology and Environment>Population

According to the logistic population growth model, the growth rate is independent of

MEDIUM

Biology>Ecology>Ecology and Environment>Population

In the graph below, where $N$ is population size and $t$ is time, $M$ represents

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Biology>Ecology>Ecology and Environment>Population

Natality refers to

HARD

Biology>Ecology>Ecology and Environment>Population

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

MEDIUM

Biology>Ecology>Ecology and Environment>Population

Read the following data carefully

Parameter	Values
Initial population of lions	$400$
Number of new births in one year	$100$
Number of deaths in one year	$40$

Imagine the lion population grows logistically where the carrying capacity is $800 .$ Then the per capita birth rate $(b)$ , per capita death rate $(d)$ , intrinsic rate of natural increase $(r)$ , increase or decrease in population during the unit time period $(\frac{d N}{d t})$ are respectively

EASY

Biology>Ecology>Ecology and Environment>Population

Species with high fecundity, high growth rates, and small body sizes are typically

EASY

Biology>Ecology>Ecology and Environment>Population

Which of the following is correct for r-selected species?

EASY

Biology>Ecology>Ecology and Environment>Population

Which of the following is not an attribute of a population?

EASY

Biology>Ecology>Ecology and Environment>Population

The following equation describes the exponential growth of a population

HARD

Biology>Ecology>Ecology and Environment>Population

Asymptote is a logistic growth curve is obtained when

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Biology>Ecology>Ecology and Environment>Population

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as

d N / d t = r N (1 - N / K) :

MEDIUM

Biology>Ecology>Ecology and Environment>Population

What does nature’s carrying capacity indicate?

EASY

Biology>Ecology>Ecology and Environment>Population

The rate of natural increase in the human population refers to:

EASY

Biology>Ecology>Ecology and Environment>Population

The usual shape of growth curve is

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Biology>Ecology>Ecology and Environment>Population

The population reaching to carrying capacity, will have

HARD

Biology>Ecology>Ecology and Environment>Population

The graph shows two types of the population growth curve. A is exponential and B is logistics.
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Which one of the following growth model considered as more realistic one?

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Biology>Ecology>Ecology and Environment>Population

Crude number of birth by a population per unit time is called

EASY

Biology>Ecology>Ecology and Environment>Population

Define population.

HARD

Biology>Ecology>Ecology and Environment>Population

Differentiate between an 'expanding age pyramid' and a 'stable age pyramid'. Substantiate your answer with diagrams.

Define population dispersal.

Important Questions on Ecology and Environment

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