InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1401. |
Pithecanthropus erectus fossil was found inA. ChinaB. JapanC. JavaD. Texas |
|
Answer» Correct Answer - C Its fossil (some teeth, skull cap and femur bone) were found in 1891 by a dutch anatomist, Eugene Dubois on the bank of solo river in Estern java. |
|
| 1402. |
Assertion: Moths living in the industrial areas became dark to match body colour to the ree trunks. |
|
Answer» Correct Answer - D Industrial melasim is the increase of melanic (dark)forms of an animal in the areas darkened by industrial pollution. The most common example is of peppered moth which existed in two strains (forms): light coloured (white) and melanic (black). In the past, bark of trees were covered by whitish lichens. so white moths escaped unnoticed from predatory birds. After industrialisation bark got covered by smoke, so the white moths were selectively picked up by birds. but black moths escaped unnoticed so they manged to survive resulting in more population of black moths and less population of white moths. Thus, industrial melanism supports evolution by natural selection. |
|
| 1403. |
You have studied the story of Pepper moths in England. Had the industries been removed, what impact could it have on the moth population? Discuss. |
|
Answer» In the population of Peppermoth, two variants were already existing in the population, the black and the grey. In the absence of industrialisation the grey moths were prevalent because they blended very well with the lichen and moss covered trees camouflage and the predators cannot spot them. The black ones were easily spotted and killed by predators and therefore were fewer in numbers. With industrialisation the stems got covered with black soot. This provided better camouflage tb the black variant and their number increased. If the industries had been removed the population of black moths would have declined because as stated earlier they would have been spotted better by predators and therefore be eaten more frequently. |
|
| 1404. |
Which is a correct match?A. Darlington-DNA replicationB. Mendel-mutationC. Morgan-father of geneticsD. Hugo de vries-Oenothera lamarckiana |
| Answer» Correct Answer - D | |
| 1405. |
Industrial meanism in moths was originally studied byA. KettlewellB. Fisher and FordC. DarwinD. Lamarck |
| Answer» Correct Answer - C | |
| 1406. |
Initiating force of evolution is `:`A. natural selectionB. mutationC. adaptationD. none of these |
| Answer» Correct Answer - B | |
| 1407. |
Darwin explained artifical selection by taking example ofA. DogsB. PigeonsC. CatsD. Giraffe |
| Answer» Correct Answer - B | |
| 1408. |
Ancestor of man who first exhibited bipedal gaitA. AustralopithecusB. Cro-Magnon manC. Java ape manD. Peking man |
| Answer» Correct Answer - A | |
| 1409. |
How do natural selection and artifical selection differ. |
| Answer» In artificial selection, man selects a trait useful to him for breeding animals. In the wild, nature selects traits favourable to the species in its environment | |
| 1410. |
Explain why D.D.T. has now become ineffective against mosquitoes |
| Answer» Originally only D.D.T. - resistant mosquitoes could survive and reproduce . Their resistant genotype , in due course of time , spread to almost the entire population. This made D.D.T. ineffective against mosquitoes. | |
| 1411. |
Which one of the following character differentiate man from other mammalsA. Superior IntelligenceB. Power of speechC. Social lifeD. Greater cranial capacity |
| Answer» Correct Answer - D | |
| 1412. |
When and from which source the mammals and the primates originated ? |
| Answer» The mammals originated in the Jurassic period from the cynodont reptiles. The primates arose in the early Tertiary period (Palaeocene epoch) from the terrestrial shrew-like insectivores. | |
| 1413. |
What do the terms prosimians and simians mean ? |
| Answer» Prosimians are the primitive primates , namely , lemurs and tarsiers. Simians are higher primates , viz. , monkeys , apes and humans. | |
| 1414. |
Give the position of man in mammals |
| Answer» Family Hominidae, suborder Anthropoidea, order Primates, infracless Eutheria, subclass Theria, cis -Mammalia | |
| 1415. |
What is brachiation ? |
| Answer» To move by swinging with arms from branches of trees as in apes. | |
| 1416. |
What is true about the isolated small tribal populations ?A. There is no change in population size as they have a large gene poolB. There is a decline in population as boys marry girls only from their own tribeC. Hereditary diseases like colour blindness do not spread in the isolated populationD. Wrestlers who develop strong body muscles in their life time pass this character on to their progeny. |
| Answer» Correct Answer - B | |
| 1417. |
Character which is closely related to human evolution:A. Disappearnce of tailB. Reduction in size of jawsC. Binocular visionD. Flat nails |
| Answer» Correct Answer - B | |
| 1418. |
Homo sapiens have evolved inA. PaleoceneB. PleistoceneC. OligoceneD. Miocene |
| Answer» Correct Answer - B | |
| 1419. |
Homo sapiens arise inA. AfricaB. Ethiopia and TanzaniaC. South American grasslandsD. Central and East Asia |
|
Answer» Correct Answer - A Homo sapiens arose in Africa and moved across continents and developed into distinct races. |
|
| 1420. |
Age of mammals and birds isA. MesozoicB. CoenozoicC. ArchaeozoicD. Palaeozoic |
|
Answer» Correct Answer - B Age of mammals and birds is coenozoic. |
|
| 1421. |
Which of the following is known as age of mammals?A. MesozoicB. PalaeozoicC. CoenozoicD. Archaeozoic |
| Answer» Correct Answer - C | |
| 1422. |
Mesozoic era is called theA. Age of FishesB. Age of ReptilesC. Age of MammalsD. Age of Birds |
| Answer» Correct Answer - B | |
| 1423. |
Which of the following is not a concept of Lamarck ?A. environment pressure causes variationB. rate and survival of organism is different due to variationC. Inheritance of acquired charactersD. if an organ is used constantly it will continuously increase in size |
| Answer» Correct Answer - B | |
| 1424. |
Archaeopteryx is a connecting link between `:`A. reptiles and birdsB. birds and mammalsC. amphibians and reptilesD. None of these |
| Answer» Correct Answer - A | |
| 1425. |
Which of the following is referred to be the first one toed horse?A. EqqusB. EohippusC. MerychippusD. Pliohippus |
| Answer» Correct Answer - B | |
| 1426. |
Which of the following is incorrect match?A. Devonian period - Age of fishesB. Carboniferous period-Age of amphibiansC. Ordovician period-Age of invertebratesD. Cretaceous period-Age of reptiles |
| Answer» Correct Answer - D | |
| 1427. |
Which of the following pair has homologous organs ?A. Pectoral fins of a fish and forelimbs of a horseB. Wings of a bat and wings of cockroachC. Air sac of fistf and lungs of frogD. Wings of a bird and wings of a butterfly |
|
Answer» Correct Answer - A Homologous organs are those organs which are originally and anatomically similar but functionally different The forelimbs of vertebrates are built on same pentadactyl plan, though they may have different functions, e.g. in birds these are modified for flying |
|
| 1428. |
Archaeopteryx is a connecting link betweenA. Birds and reptilesB. Reptiles and mammalsC. Annelids and arthropodsD. Arnphibians and fishes |
| Answer» Correct Answer - A | |
| 1429. |
Which of the following character of Archaeopteryx is similar to reptiles?A. Presence of feathers on bodyB. Presnece of long tailC. Intimate fusion of skull bonesD. Jaws are modified into beaks |
| Answer» Correct Answer - B | |
| 1430. |
Which one of the following is a pair homologous organsA. Lungs of rabbit and gills of rohuB. Wings of bat and wing of butterflyC. Pectrol fin of rohu and the forelimb of horseD. Wing of grasshopper and wing of crow |
|
Answer» Correct Answer - C Pectoral fins of rohu and fore limbs of horse have similar origin an d basic structure, hence these are3 homologous organs. |
|
| 1431. |
Which is not true ArchaeopteryxA. Jaws are modified into beakB. Tail is bony and longC. Fore limbs are modified into wingsD. Connecting link between birds and mammals |
|
Answer» Correct Answer - D Archaeopteryx is the connecting link between birds have been evolved from reptilian ancestors. As per Huxely "Birds are the glorified reptiles" |
|
| 1432. |
Goldschmidt has classfied evolution into micro, macro, and mega evolution. Which one of the following is referred to as micro-evolutionA. Evolution at variety levelB. Evolution at sub species levelC. Evolution at species and genus levelD. Evolution at family level |
|
Answer» Correct Answer - B Micrievolution is the development of minute changes due to gene mutations and recombinations. These change occure below the level of species |
|
| 1433. |
Which is incorrectA. Wings of insect and birds are analogousB. Wings of insects and bats are analogousC. Wings of insects and birds are homologousD. Wings of bats and birds are homologous |
|
Answer» Correct Answer - C The wings of an insect are analagous to wings of bird and bat. It is due to the fact that the basic structure of wings of the insect is different from the wings of bird and bat. However their function is similar. |
|
| 1434. |
Two organs which are similar in structure and origin, but not necessarily in function are called Or The organs of different species that are related to each other through common descent though becomes functionally different are calledA. HomologousB. AnalogousC. ApocrineD. None of these |
|
Answer» Correct Answer - A Homologous organs are similar in structure and origin but not necessarily in function. Hence, organs from different species having a similar basic form, microscopic strucutres, body position and embryonic development are said to be homologous. |
|
| 1435. |
Evolutionary convergence is characterized byA. Development of dissimilar characteristics in closely related groupsB. Development of a common set of characteristics in groups of different ancestryC. Development of characteristics by random.D. Replacement of common characteristics in different groups |
| Answer» Correct Answer - B | |
| 1436. |
How can you suggest that biochemistry gives evidence for organic evolution? |
|
Answer» In the same species or group of organisms, similar type of proteins are found, thus supporting organic evolution. |
|
| 1437. |
Define Adaptive radiation. |
|
Answer» The evolutionary process which produces new species from single point origin and spread to other geographical areas (habitat) is called adaptive radiation. Eg. Darwin finces found in Galapagos Island and Australian Marsupials. |
|
| 1438. |
The study of homologous structures in mature organism provides evidence for the evolutionary relationships among certain groups of organisms. Which field of study includes this evidence of evolution?A. Comparative cytologyB. BiochemistryC. GeologyD. Comparative anatomy |
| Answer» Correct Answer - D | |