The wings of a bat and the wings of an insect are examples of:
Homologous structures
Vestigial structures
Analogous structures
Fossil evidence
Related Questions
Phenomenon of industrial melanism demonstrates
Reproductive isolation
Induced mutation
Natural selection
Geographical isolation
Which of the following events is an examples of evolution?
Different finch species found of different Galapagos islands
Remarkable rise in antibiotic resistant strains of bacteria
Changes in guppy populations after the introduction of predators
All of the above
Certain cave-dwelling organisms have lost their eyes and pigmentation over generations. While seemingly detrimental, these traits persist. Which evolutionary explanation BEST accounts for this phenomenon?
Use it or lose it: In the absence of light, vision is not beneficial, and the energy expenditure for eye development and maintenance is selected against. Similarly, pigmentation is not advantageous in a dark environment.
Bottleneck effect: A random event reduced the cave population, and the surviving organisms happened to lack eyes and pigmentation. These traits then became fixed in the population.
Founder effect: The original cave-dwelling organisms lacked eyes and pigmentation, and these traits persisted in subsequent generations.
Sexual selection: In the dark cave environment, mates are selected based on traits other than vision and pigmentation.
Industrial melanism was highlighted by
Mimosa pudica
Triticum aestivum
Biston betularia
Rock python
Which of the following example of variation is not important from an evolutionary standpoint?
Genetic differences between individual organisms comprising the population
Inherited difference between individual organisms comprising the population
Both (a) and (b)
Difference due to diet, health, age and accident that have no affect on an individual’s ability to survive and reproduce
Phenomenon of industrial melanism demonstrates
Reproductive isolation
Induced mutation
Natural selection
Geographical isolation
In Africa, there is a species of bird called the yellow-throated long claw. It looks exactly like the meadowlark found in North America, but they are not closely related. This is an example of
Uniformitarianism
Artificial selection
Gradualism
Convergent evolution
Pre-industrialization era saw the catching of dark-winged moths and survival of white-winged moths; during post-industrialization period, the white-winged moths were caught by predators and dark-winged moths survived. The phenomenon of industrial melanism is an example of
Insect- resistance
Defensive adaptation of skin against radio waves
Directional selection because of smoke from the industries
Drug- resistance
Which of the following statements are incorrect. I. Microbial experiment shows that when the pre-existing advantagoeus mutations are selected they will result in the observation of new phenotypes. Over few generations, this would results in speciation, II. Neanderthal fossils represents a human relative, III. In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct. These animals evolved into the first living amphibian on both land and water, IV. Lichens can be used as water pollution indicators, V. Alfred Wallace, a naturalist, who worked in Malay Archepalago (present Indonesia) had also came to the similar conclusion on natural selection as reached by Darwin. The correct option is
I and III
II and IV
I, II and III
III, IV and V
Change of lighter coloured variety of peppered moths (Biston betularia) to darker variety occurred due
industrial melanism
natural selection
pollution
predation
