The number and kinds of organisms are not constant. How do you explain this statement?
(N/A) The population of any organism cannot remain constant over time. In some generations,the population may increase due to favorable environmental conditions. Conversely,in other generations,the population may decrease due to unfavorable conditions or resource limitations.
Furthermore,the kinds of organisms cannot remain constant because evolution is a continuous,never-ending process. Throughout geological time,new species originate through speciation,while older species may become extinct due to their inability to adapt to changing environments.
For example,the population of mosquitoes is very high during warm and humid weather,whereas they are rarely seen during extreme summer or winter conditions.
Furthermore,the kinds of organisms cannot remain constant because evolution is a continuous,never-ending process. Throughout geological time,new species originate through speciation,while older species may become extinct due to their inability to adapt to changing environments.
For example,the population of mosquitoes is very high during warm and humid weather,whereas they are rarely seen during extreme summer or winter conditions.
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Similar Questions
Match the columns:
Column-$I$ Column-$II$ $(1)$ Mutation $(a)$ Change in population allele frequencies due to chance alone. $(2)$ Gene flow $(b)$ Difference in survival and reproduction. $(3)$ Natural selection $(c)$ Immigration,emigration change allele frequencies. $(4)$ Genetic drift $(d)$ Source of new alleles.
| Column-$I$ | Column-$II$ |
|---|---|
| $(1)$ Mutation | $(a)$ Change in population allele frequencies due to chance alone. |
| $(2)$ Gene flow | $(b)$ Difference in survival and reproduction. |
| $(3)$ Natural selection | $(c)$ Immigration,emigration change allele frequencies. |
| $(4)$ Genetic drift | $(d)$ Source of new alleles. |
Easy
View SolutionWhich of the following refer to incorrect example$(s)$ of organisms which have evolved due to changes in environment brought about by anthropogenic action?
$(a)$ Darwin's Finches of Galapagos islands.
$(b)$ Herbicide resistant weeds.
$(c)$ Drug resistant eukaryotes.
$(d)$ Homologous organ in Bat and Man
$(a)$ Darwin's Finches of Galapagos islands.
$(b)$ Herbicide resistant weeds.
$(c)$ Drug resistant eukaryotes.
$(d)$ Homologous organ in Bat and Man
Medium
View SolutionCleidoic egg is an adaptation for
Which of the following options provides a correct example of convergent and divergent evolution, respectively? (Convergent Evolution - Divergent Evolution)
Medium
View SolutionWhich of the following are the wrong statements?
$I.$ Organs which are different in basic structure and origin but perform similar functions are called analogous organs.
$II.$ Organs with different basic structure and origin but perform similar functions are called homologous organs.
$III.$ Homologous organs lead to convergent evolution.
$IV.$ Analogous organs lead to divergent evolution.
The correct combination is:
$I.$ Organs which are different in basic structure and origin but perform similar functions are called analogous organs.
$II.$ Organs with different basic structure and origin but perform similar functions are called homologous organs.
$III.$ Homologous organs lead to convergent evolution.
$IV.$ Analogous organs lead to divergent evolution.
The correct combination is:
Medium
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