HARD
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The technical term/s for the number of births per 1000 people per year is/are

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Important Questions on Organisms and Populations

EASY
Which one among the following is the most populated State in India as per Census 2011?
HARD

If any population has an equal birth rate and death rate then its age pyramid is    X   , vital index is    Y    and the population is    .

EASY

The phenomenon of 'demographic dividend' of a country relates to_______________.

EASY
Which ONE of the following options is TRUE with respect to Emigration?
EASY
Which of the following factors has a negative effect on to the population growth rate _____
MEDIUM
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:
MEDIUM
In which of the following region of India, the Jarwa and Onge tribes are found?
EASY
If ' + ' sign is assigned to beneficial interaction, ' – ' sign to detrimental and ' 0 ' sign to neutral interaction, then the population interaction represented by '+' '-' refers to
MEDIUM

Give appropriate biological or technical terms for the following:

The difference between the birth rate and death rate.

EASY

Give biological explanations for the following:

Education is very important for population control

EASY
An association of individuals of different species living in the same habitat and having functional interactions is:
EASY
For ascertaining population the first census was conducted in 1891. Which year will be the next census in near future?
EASY
In which of the following interaction both partners are adversely affected?
EASY

Which one of the following statements regarding sex composition is not correct?

MEDIUM
The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that.


Question Image
EASY
The principle of competitive exclusion was stated by
EASY
Which of the following is correct for r-selected species?
HARD
Give appropriate biological/ technical terms for the following:
Number of live births per 1000 people per year.
EASY
As per the Economic Survey of 2018-19, the national 'total fertility rate' is expected to be below by which of the year:
EASY
The impact of immigration on population density is: