MCQ
The population of a place can be increased when
  • A
    Emigration decreases
  • B
    Predation increases
  • C
    Reproductivity decreases
  • Immigration increases

Answer

Correct option: D.
Immigration increases
d
(d) Immigration is permanent entry of addition person into the existing population of a country or region from outside. ex. Many Nepalese and Chinese come to settle in India.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The cells without nuclei are present in
Which of the following is phylogenetically most advanced of the dicotyledonous families
Microbes found to be very useful in genetic engineering are
An angiospermic plant is having $24$ chromosomes in its leaf cells. The number of chromosomes present in synergid, pollen grain, nucellus & endosperm will be respectively
Which of the following statements are correct ?
(i) Vernalisation refers to the promotion of flowering by a period of high temperature.
(ii) The spring variety of crops are normally planted in the spring and come to flower before the end of the growing season.
(iii) It is not seen in biennial plants.
(iv) Subjecting cold treatment to sugar beet will result in flowering.
(v) Cytokinins specially help in delaying senescence.
(vi) Auxins are involved in regulating apical dominance.
(vii) Ethylene is specially useful in enhancing seed germination.
(viii) Gibberellins are responsible for immature falling of leaves.
(ix) Cytokinins promote senescence.
(x) Auxins control apical dominance.
(xi) Gibberellins promote shoot elongation.
(xii) Abscissic acid enables seeds to withstand desiccation.
Choose the correct option given below :-
Which one of the following is not a functional unit of an ecosystem?
The excess amount of $CO_2 $
It is not "The evil quartet" for biodiversity loss.
The most significant value of vegetative propagation is that
$A$ doctor; while operating on an $H I V^{* i i}$ patient accidently cut himself with a scalpel. He comes to you, suspecting himself to have contacted the virus. Which test will you advise him to rule out/confirm his suspicion?