CBSE
Multiple Choice QuestionsIndustrial melanism is an example of
Neo Darwinism
Natural selection
Mutation
Mutation
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
Adaptive radiation
Natural selection
Migration
Migration
| Convergent Evolution | Divergent Evolution |
| Eyes of Octopus and mammals | Bones of forelimbs of vertebrates |
| Convergent Evolution | Divergent Evolution |
| Thorns of Bougainvillia and tendrils of Cucurbita | Wings of butterflies and birds |
| Convergent Evolution | Divergent Evolution |
| Bones of forelimbs of vertebrates | Wings of butterfly and birds |
| Convergent Evolution | Divergent Evolution |
| Bones of forelimbs of vertebrates | Wings of butterfly and birds |
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
Shortening of jaws
Binocular vision
Increasing cranial capacity
Increasing cranial capacity
The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating for heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was
Homo habilis
Neanderthal human
Cro-magnon humans
Cro-magnon humans
If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complentary RNA strand sequence?
TTAGU
UAGAC
AACTG
AACTG
In a population of 1000 individuals 360 belongs to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is
0.4
0.5
0.6
0.6
Forelimbs of cat, lizard used in walking forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of
analogous organs
adaptive radiation
homologous organs
homologous organs
Which one of the following are analogous structures?
Wings of bat and wings of pigeon
Gills of prawn and lungs of man
Thorns of Bougainvillea and tendrils of Cucurbita
Thorns of Bougainvillea and tendrils of Cucurbita
Which of the following had the smallest brain capacity?
Homo erectus
Homo sapiens
Homo neanderthalensis
Homo neanderthalensis
