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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1701. |
Who was the first civilized man ? |
| A. | Cro-magnon man |
| B. | Neanderthal man |
| C. | Java ape man |
| D. | Peking man |
| Answer» B. Neanderthal man | |
| 1702. |
Genetic drift occurs when few individuals of a colonize, the phenomenon is |
| A. | bottleneck effect |
| B. | assortative matin |
| C. | founder’s effect |
| D. | random mating |
| Answer» E. | |
| 1703. |
In a population, group of individuals of similar phenotypes are formed due to differential reproduction due to |
| A. | genetic drift |
| B. | natural selection |
| C. | migration |
| D. | selective hybridization |
| Answer» B. natural selection | |
| 1704. |
A. All the finches on the Galapagos Islands descended from common ancestor.R. They show variations only in their beaks as they got adapted to different feeding habits. |
| A. | If A and R both are true and R is correct explanation of A |
| B. | If A and R both are true but R is not correct explanation of A |
| C. | If A is true and R is wrong |
| D. | If A is wrong and R is true |
| Answer» C. If A is true and R is wrong | |
| 1705. |
Darwin’s natural selection is based on |
| A. | variations |
| B. | prodigality, struggle for existence, survival of fittest |
| C. | law of use and disuse |
| D. | law of inheritance of acquired characters |
| Answer» B. prodigality, struggle for existence, survival of fittest | |
| 1706. |
Cosmozoic theory was given by ______. |
| A. | Darwin |
| B. | Richter |
| C. | Aristotle |
| D. | Von Baer |
| Answer» D. Von Baer | |
| 1707. |
Phylogenetic evolution refers to |
| A. | genetic relationship and evolutionary sequence |
| B. | similar habitat |
| C. | natural affinity of genes |
| D. | similar character |
| Answer» D. similar character | |
| 1708. |
A. Genetic drift refers to change in allelic frequencies of a gene pool due to chance and occurs both in large and small populations._ans_key_R. Small populations will, therefore, suffer more than larger ones. |
| A. | If A and R both are true and R is correct explanation of A |
| B. | If A and R both are true but R is not correct explanation of A |
| C. | If A is true and R is wrong |
| D. | If A is wrong and R is true |
| Answer» B. If A and R both are true but R is not correct explanation of A | |
| 1709. |
Mass extinction of the end of Mesozoic era was probably due to ? |
| A. | continental drift |
| B. | the collision of earth with large meteorites |
| C. | massive glaciations |
| D. | change in earth’s orbit |
| Answer» D. change in earth’s orbit | |
| 1710. |
Theory of Lamarck was based on |
| A. | adaptive collision |
| B. | adaptive rediations |
| C. | adaptive modifications |
| D. | none of these |
| Answer» C. adaptive modifications | |
| 1711. |
Leakey and Leakey discovered the fossils of ______. |
| A. | apeman |
| B. | erect man |
| C. | Peking man |
| D. | the tool maker |
| Answer» B. erect man | |
| 1712. |
Match the correct set._ans_key_Column I Column II_ans_key_I. Modified form of Lamarckism A. G.L. Stebbins (1950)_ans_key_II. Variation and evolution in plants B. Neo- Lamarckism_ans_key_III. Germinal selection theory C. Etienne Geoffroy_ans_key_IV. Supporter of Lamarck’s theory D. August Welsmann |
| A. | I – A, II – B, III – C, IV – D |
| B. | I – D, II – B, III – C, IV – A |
| C. | I – A, II – B, III – D, IV – C |
| D. | I – D, II – A, III – C, IV – B |
| Answer» D. I – D, II – A, III – C, IV – B | |
| 1713. |
Hardy – Weinberg equilibrium is known to be effected by gene flow, genetic drift, mutation, genetic recombination and |
| A. | evolution |
| B. | limiting factor |
| C. | saltation |
| D. | natural selection |
| Answer» B. limiting factor | |
| 1714. |
Which is not applicable to the Biological species concept ? |
| A. | hybridization |
| B. | natural population |
| C. | reproductive isolation |
| D. | gene pool |
| Answer» B. natural population | |
| 1715. |
A. Java man and peking men were called Homo erectus by Mayer._ans_key_R. They appeared same as both used fire. |
| A. | A is correct and R is its explanation. |
| B. | A and R both are correct but R is not an explanation to A |
| C. | A is correct and R is false |
| D. | A is false and R is correct |
| Answer» B. A and R both are correct but R is not an explanation to A | |
| 1716. |
Present age of human known as ______. |
| A. | atomic age |
| B. | iron age |
| C. | bronze age |
| D. | silver age |
| Answer» E. | |
| 1717. |
Assertion : According to Hardy – Weinberg Equilibrium, the frequency of an allele remains the same generation after genetation. _ans_key_Reason : The only way to bring about a change is by natural selection. |
| A. | A is correct and R is its explanation. |
| B. | A and R both are correct but R is not an explanation to A |
| C. | A is correct and R is false |
| D. | A is false and R is correct |
| Answer» E. | |
| 1718. |
Retrogressive evolution is shown by ______. |
| A. | man |
| B. | birds |
| C. | tunicates |
| D. | fish |
| Answer» B. birds | |
| 1719. |
Apes share ............... blood groups with man |
| A. | A, B, AB |
| B. | A, B, O |
| C. | AB, O |
| D. | A and B only |
| Answer» D. A and B only | |
| 1720. |
The correct sequence of course of cultural evolution from cromagnon to modern man is |
| A. | Palaeoilthic – Mesolethic – Neolithic – Bronze – Iron – Atomic |
| B. | Mesolethic – Bronze – Neolithic – Iron – Atomic |
| C. | Palaeolithic – Neolithic – Iron – Bonze – Atomic |
| D. | None above |
| Answer» B. Mesolethic – Bronze – Neolithic – Iron – Atomic | |
| 1721. |
A. From evolutionary point of view, human gestation period is believed to be shortening._ans_key_R. One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage. Read the above statement the answer according |
| A. | If A and R both one correct and R is an explanation to A |
| B. | If A and R both are correct and R is an explanation to A |
| C. | If A is correct and R is wrong |
| D. | If A is wrong and R is correct |
| Answer» E. | |
| 1722. |
Sympatric speciation arises due to |
| A. | non-overlapping population of the same area |
| B. | geographical isolation |
| C. | overlapping population of the same area |
| D. | non-reproductive population of the same area |
| Answer» E. | |
| 1723. |
A. Mutations occurring in the germinal cells of the gonads are called germs mutations._ans_key_R. They are heritable raw materials for natural selection lead to origin of new species. |
| A. | If A and R both are true and R is correct explanation of A |
| B. | If A and R both are true but R is not correct explanation of A |
| C. | If A is true and R is wrong |
| D. | If A is wrong and R is true |
| Answer» B. If A and R both are true but R is not correct explanation of A | |
| 1724. |
Match the correct set._ans_key_Column I Column II_ans_key_I. Fossil A. 345-405 million years ago_ans_key_II. Devonian period B. Fossillium_ans_key_III. Cambrian period C. 425-500 million years ago_ans_key_IV. Ordovician period D. 500-600 million years ago |
| A. | I – B, II – A, III – D, IV – C |
| B. | I – A, II – B, III – C, IV – D |
| C. | I – B, II – C, III – D, IV – A |
| D. | I – B, II – D, III – C, IV – A |
| Answer» B. I – A, II – B, III – C, IV – D | |
| 1725. |
‘Piltdown man’ is |
| A. | Hemo habili |
| B. | Eoanthropus |
| C. | Homo sapiens |
| D. | Pithecanthropine |
| Answer» E. | |
| 1726. |
The evolution of genera ‘Homo’ occured in |
| A. | pleistocene |
| B. | pliocen |
| C. | miocen |
| D. | oilgocene |
| Answer» C. miocen | |
| 1727. |
Which one of the following ancestors of man first time showed bipedal movement ? |
| A. | Australopithecu |
| B. | Cro-magnon |
| C. | Java apeman |
| D. | Peking man |
| Answer» B. Cro-magnon | |
| 1728. |
Neanderthal man differs from modern man is ______. |
| A. | receeding jaw |
| B. | protuding jaw |
| C. | could make good tools |
| D. | could make good picture |
| Answer» B. protuding jaw | |
| 1729. |
One of the oldest, best preserved and most complete hominid fossil commonly known as ‘Lucy’ belongs to the genus. |
| A. | Oreopithecu |
| B. | Dryopithecus |
| C. | Pithecanthropus |
| D. | Australopithecus |
| Answer» E. | |
| 1730. |
The most recent in human evolution is ______. |
| A. | mesolithic |
| B. | neolithic |
| C. | upper palaeolithic |
| D. | middle palaeolithic |
| Answer» E. | |
| 1731. |
Which is correct according to cranial capacity from the figure given as examples ? |
| A. | A = 104 cc, B = 355 cc, C = 500 cc, D = 405 cc, E = 1400 cc |
| B. | A = 355 cc, B = 104 cc, C = 500 cc, D = 405 cc, E = 1400 cc |
| C. | A = 104 cc, B = 355 cc, C = 405 cc, D = 500 cc, E = 1400 cc |
| D. | A = 355 cc, B = 104 cc, C = 405 cc, D = 500 cc, E = 1400 cc |
| Answer» B. A = 355 cc, B = 104 cc, C = 500 cc, D = 405 cc, E = 1400 cc | |
| 1732. |
Peking man is known as ______. |
| A. | Australopithecu |
| B. | Sinanthropus |
| C. | Pithcanthropus |
| D. | Homo sapiens |
| Answer» C. Pithcanthropus | |
| 1733. |
Which of the following is correct match regarding cranial capacity and location of respective fossil. |
| A. | Australopithecus – Africa (450 600 CC) |
| B. | Java man – Germany (800 CC) |
| C. | Neanderthal – Africa (500–600 CC) |
| D. | Homo sapiens – South east Asia |
| Answer» B. Java man – Germany (800 CC) | |
| 1734. |
Closest primate to man is ______. |
| A. | gorilla |
| B. | rhesus monkey |
| C. | orangutan |
| D. | lemur |
| Answer» B. rhesus monkey | |
| 1735. |
The first man to use fire was ______. |
| A. | neanderthal man |
| B. | Homo erectus |
| C. | cro-magnon man |
| D. | Australopithecus |
| Answer» C. cro-magnon man | |
| 1736. |
Human evolution actually started in ______. |
| A. | France |
| B. | America |
| C. | Central Asia |
| D. | Africa |
| Answer» E. | |
| 1737. |
A human species who were more intelligent than the present human beings |
| A. | Ramapethicu |
| B. | Australopithicus africanus |
| C. | Homo erectus |
| D. | Homo fossilis |
| Answer» E. | |
| 1738. |
Match the correct set_ans_key_Column – I Column – II_ans_key_A. Old world monkeys 1. Tree shrews, the ancestors of primates_ans_key_B. New world monkeys 2. Wide nistrils and prehensile tail_ans_key_C. Prosimians 3. Narrow nostrils and non prehensile tail_ans_key_D. Simians 4. Monkey and apes_ans_key_A B C D A B C D |
| A. | 2 3 1 4 |
| B. | 3 2 1 4 |
| C. | 2 1 3 4 |
| D. | 1 3 2 4 |
| Answer» D. 1 3 2 4 | |
| 1739. |
Match the features from the columns_ans_key_Column – I Column – II_ans_key_A. Ape like primate 1. Homo erectus_ans_key_B. Ancestor of modern apes 2. Australopithecus_ans_key_C. Connecting link between ape and man 3. Dryopithecus_ans_key_D. First to use fire 4. Propliopethecus_ans_key_A B C D A B C D |
| A. | 3 4 2 1 |
| B. | 4 3 2 1 |
| C. | 3 4 1 2 |
| D. | 4 2 1 3 |
| Answer» C. 3 4 1 2 | |
| 1740. |
Vernalization is (MPPMT- 1990, AMU- 1999, IKCMEE- 2000) |
| A. | Growth graph related to light |
| B. | Effect of photoperiod on the growth of plant, which results flowering |
| C. | Rapid growth in low temperature |
| D. | Daily photo period |
| Answer» D. Daily photo period | |
| 1741. |
What is apical dominance? (CPMT- 1989) |
| A. | Growth of apical bud is inhibited due to nearby lateral buds |
| B. | Growth of apical bud is promoted due to removal of nearest lateral buds |
| C. | Removal of apical bud hinders growth of lateral buds |
| D. | Development of lateral buds hinders due to presence of apical bud |
| Answer» E. | |
| 1742. |
When is abscission- layer formed? (AIIMS- 1980) |
| A. | With increased concentration of auxin |
| B. | With decreased concentration of auxin |
| C. | With increased concentration of gibberrelin |
| D. | With decreased concentraton of gibberelin |
| Answer» C. With increased concentration of gibberrelin | |
| 1743. |
What is agent Orange ? (CBSE 1998, AIMS 1999) |
| A. | Weedicide with dioxin |
| B. | Chemical used in luminiscent plant |
| C. | Insectide which is biodegradable |
| D. | Colour used in tube light |
| Answer» B. Chemical used in luminiscent plant | |
| 1744. |
Which of the following is water stress hormone? (CBSE-1993, MPPMT-1995, BHU 1998, CETCHD, Kerala 2000, Orissa- 2003) |
| A. | Benzyl amino purine |
| B. | 2,4- dichlorophenoxy acetic acid |
| C. | Ethylene |
| D. | Abscisic acid |
| Answer» E. | |
| 1745. |
If apical region of stem is removed from any plant, what is observed? (CMPT - 1993, CBSE -1994, 2000, KARNATAKA - 2000 |
| A. | New apical bud formation |
| B. | Length of main stem increases |
| C. | Plant dies |
| D. | Lateral branches emerges |
| Answer» E. | |
| 1746. |
What is 2-4 D ? |
| A. | Weedicide |
| B. | Insecticide |
| C. | Rodenticide |
| D. | Wormicide |
| Answer» B. Insecticide | |
| 1747. |
Which auxin is used in callus and suspension culture technique in general? |
| A. | Napthelene acetic acid |
| B. | 2-4 Dichloro acetic acid |
| C. | 2,4,5, Tri phenoxy acetic acid |
| D. | 2,4 dichloro phenoxy acetic acid. |
| Answer» B. 2-4 Dichloro acetic acid | |
| 1748. |
Which of the hormone is synthetic ? (MPPMT 1996, AIIMS 1996, BHU 1997, CPMT 1999) |
| A. | GA3 |
| B. | GA2 |
| C. | IAA |
| D. | 2-4 D |
| Answer» E. | |
| 1749. |
What is initiative substance of IAA? (PMT- 1990- APMEE 2002) |
| A. | Tryptophan |
| B. | Lucine |
| C. | Tyrosine |
| D. | Phehyl alamine |
| Answer» B. Lucine | |
| 1750. |
What is improper in callus and suspension culture ? |
| A. | Regeneration of sapling. |
| B. | Formation of cell biomass. |
| C. | Development of genetically modified plants |
| D. | Protoplast isolation |
| Answer» D. Protoplast isolation | |