MCQOPTIONS
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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.
| 1651. |
From the given option which is the appropriate for ecto parasite animal Ascaris, Tapeworm, plas modium, mites |
| A. | phytoplankton |
| B. | mesofauna |
| C. | macrofauna |
| D. | phytoplanktons and mesofauna. |
| Answer» D. phytoplanktons and mesofauna. | |
| 1652. |
Producers --->Decomposers ---->’X’, then what will be ‘X’ ? |
| A. | Nostoc |
| B. | Fungi |
| C. | Both of these |
| D. | None of these |
| Answer» E. | |
| 1653. |
What is true for the given statement ? |
| A. | Both statements are true |
| B. | X - correct, Y- wrong |
| C. | Both statements are wrong |
| D. | X- wrong, Y- correct |
| Answer» B. X - correct, Y- wrong | |
| 1654. |
‘X’ is an example of Mutualism and ‘Y’is an example of succession then which is the correct realtionship ? |
| A. | X = Hermit Grab Y = Gastropod |
| B. | X= Sea anemore Y = mesosere Succession |
| C. | X = Lichen Y = Xerosere |
| D. | X= Lichen Y= Hydrosere |
| Answer» D. X= Lichen Y= Hydrosere | |
| 1655. |
Which is related to the given statement ? In the begining of summer crow and koel lays eggs. |
| A. | As the light intensity decerease reproductive organs become active |
| B. | In some Birds increase or decrease in intensity of hight- makers reproductive organs active or inactive respecctivity |
| C. | with increase in temperture, gonads become active |
| D. | None of these |
| Answer» D. None of these | |
| 1656. |
Population of CBM Village year wise ........ |
| A. | Irruptive |
| B. | ‘S’ shaped |
| C. | J shaped |
| Answer» C. J shaped | |
| 1657. |
Depending on the study of bird population in diffrent areas of North Gujarat for last 10 years (2000 -2010) In which month population of bird is least ? |
| A. | February |
| B. | September |
| C. | April |
| D. | October |
| Answer» C. April | |
| 1658. |
Recently a village was badly affected by jaundice and Dengue,which of the following will decrease due to this ? |
| A. | No. of person |
| B. | area |
| C. | Birthrate |
| D. | Death rate |
| Answer» B. area | |
| 1659. |
How mandy sq. km. area of biosphere is occupied by marine habitat. ? |
| A. | 3,62,000,000 |
| B. | 36 crore 20 lacs |
| C. | 36,20 Million |
| D. | all of these |
| Answer» E. | |
| 1660. |
Which of the following is not included as the climax community of general processof succession ? |
| A. | Sedge-meadow stage |
| B. | phytoplanktones |
| C. | Forest |
| D. | Grassland |
| Answer» C. Forest | |
| 1661. |
What is correct for the given statement ? |
| A. | Both X&Y are correct |
| B. | Both x & Y are wrong |
| C. | X is wrong Y is true |
| D. | X is correct & Y is true |
| Answer» B. Both x & Y are wrong | |
| 1662. |
The turtle of Galapagus island and the goats living there both were eating tender grass, state the relationship. |
| A. | Interspecific competition |
| B. | Emigration |
| C. | predation |
| D. | None of these |
| Answer» B. Emigration | |
| 1663. |
carrying capicity of a population is determind by (BHU 2001) |
| A. | Birth rate |
| B. | Death rate |
| C. | limiting resources |
| D. | Reproductive ability ... |
| Answer» D. Reproductive ability ... | |
| 1664. |
From the given option find out the correct pair ? |
| A. | Mesofauna - Earthworm |
| B. | Macrofauna - spider |
| C. | Microfauna - fungi |
| D. | None of these |
| Answer» D. None of these | |
| 1665. |
What is the composition of soil with high waterlogging capicity ? |
| A. | Sandy soil |
| B. | Black soil (loan soil) |
| C. | Rocky soil |
| D. | Any one of these |
| Answer» C. Rocky soil | |
| 1666. |
Which is the correct option for the given table ?write ‘T’ if the given ecample is correct and ‘F’ for |
| A. | TFT |
| B. | TTFF |
| C. | FFTT |
| D. | TFFF |
| Answer» C. FFTT | |
| 1667. |
X= Arthropods, Y = Mollusca, z = Coelenterates :-If the X by using Y, lives benifical life with z, then which of the following is correct example ? |
| A. | X = cockroachY = pearl oyester Z = Hydra |
| B. | X = Millipede Y = pila Z = jellyfish |
| C. | X = Hermit crab Y = Gastropoda Z = sea anenone |
| D. | All of these |
| Answer» D. All of these | |
| 1668. |
Give correct option for the given true and false statements |
| A. | FFFF |
| B. | TFTF |
| C. | TTFT |
| D. | FTFT |
| Answer» E. | |
| 1669. |
At ‘t’ time, population density is ‘N’ and at t+1 time population density is Nt+1/If Nt+1 - Nt then find out the correct option |
| A. | B-D +I-E 0 |
| B. | B-D+I-E = 0 |
| C. | B+D-I+E +0 |
| D. | B+D-I+E 0 |
| Answer» C. B+D-I+E +0 | |
| 1670. |
Whats percentage of earth is occupied by marine habitat ?(1) 71% (2) 4 % (3) 67% (4) 29% |
| A. | 1,2 |
| B. | 2,3 |
| C. | 1,4 |
| D. | 1 |
| Answer» E. | |
| 1671. |
Mathc column I with column II |
| A. | (1-s), (2-r), (3-p) (4-q) |
| B. | (1-r), (2-s), (3-q) (4-p) |
| C. | (1-s), (2-p), (3-q) (4-r) |
| D. | (1-q), (2-r), (3-s) (4-p) |
| Answer» D. (1-q), (2-r), (3-s) (4-p) | |
| 1672. |
Biological control as pest control in agriculture is an example of ..... |
| A. | Predation |
| B. | Competition |
| C. | Emigration |
| D. | diseases |
| Answer» B. Competition | |
| 1673. |
What is true for the members of same species [CBSC, PMT - 2002] |
| A. | Capicity of inter breeding |
| B. | shows same ecological niche |
| C. | show diffrent type of ecological niche |
| D. | They have diffrent Habitat |
| Answer» B. shows same ecological niche | |
| 1674. |
Biotic community means.... [CBSC, PMT - 2001] |
| A. | Group of Birds |
| B. | Group of species |
| C. | Group of interrelated population |
| D. | Groups of interrelated ecosystem |
| Answer» D. Groups of interrelated ecosystem | |
| 1675. |
Postanal tail can be traced in ______. |
| A. | cobra |
| B. | earthworm |
| C. | scorpion |
| D. | centipede |
| Answer» B. earthworm | |
| 1676. |
An old view about evolution states that the organisms were created by a super organism in the same condition as they exist now. This theory is called ______. |
| A. | theory of special creation |
| B. | theory of natural selection |
| C. | Lamarck’s theory of evolution |
| D. | theory of spontaneous generation |
| Answer» B. theory of natural selection | |
| 1677. |
Precipitation test gives evidence from ______. |
| A. | comparative embryology |
| B. | comparative anatomy |
| C. | comparative serology |
| D. | none above |
| Answer» D. none above | |
| 1678. |
Given : 1 = natural selection ; 2 = variations and their inheritance ; 3 = survival of the fittest ; 4 = struggle for existence. According to Darwinism, which of the following represents the correct sequence of events in the origin of new species ? |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 1, 4 |
| C. | 3, 4, 1, 2 |
| D. | 4, 2, 3, 1 |
| Answer» D. 4, 2, 3, 1 | |
| 1679. |
In external appearance the krait and lycodon are indistinguishable. This is an example of |
| A. | analogy |
| B. | imitation |
| C. | mimicry |
| D. | homology |
| Answer» D. homology | |
| 1680. |
It is not a true fossil. |
| A. | Placoderm |
| B. | Limulus |
| C. | Archeopteryx |
| D. | Therapsid |
| Answer» C. Archeopteryx | |
| 1681. |
Which of the following cannot determine phylogenetic relationships ? |
| A. | Physiology |
| B. | Morphology |
| C. | Biogeography |
| D. | Embryology |
| Answer» C. Biogeography | |
| 1682. |
An important evidence in favour of organic evolution is the occurence of |
| A. | homologous and analogous organs |
| B. | homologous and vestigial organs |
| C. | analogous and vestigial organs |
| D. | homologous organs only |
| Answer» C. analogous and vestigial organs | |
| 1683. |
The age of rock is calculated on the basis of ______. |
| A. | types of fossils present |
| B. | number of strata present |
| C. | amount of uranium present |
| D. | none above |
| Answer» D. none above | |
| 1684. |
A. Ear muscles of external ear in man are poorly developedR. These muscles are useful which move external ear freely to detect sound efficiently. |
| 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» D. If A is wrong and R is true | |
| 1685. |
The Haeckel’s theory of biogenetic Law means that ______. |
| A. | all organisms start as an egg |
| B. | life history of an organism reflects its evolutionary history |
| C. | nonliving matter from life |
| D. | progeny resembles parents |
| Answer» C. nonliving matter from life | |
| 1686. |
These are some examples of vestigial structures in man |
| A. | wisdom tooth vermiform appendix, hair |
| B. | wisdom tooth, vermiform appendix, coccyx |
| C. | wisdom tooth, head, nails |
| D. | none of these |
| Answer» C. wisdom tooth, head, nails | |
| 1687. |
Who gave evolutionary concept of determinants ? |
| A. | Dobzhansky |
| B. | Wright |
| C. | Weismann |
| D. | Lamarck |
| Answer» C. Weismann | |
| 1688. |
Many of the animals and plants found on islands are ______. |
| A. | endemic |
| B. | exotic |
| C. | sympatric |
| D. | none of these |
| Answer» B. exotic | |
| 1689. |
Which one is not a vestigial organ in man ? |
| A. | Wisdom teeth |
| B. | Muscles of external ear-pinna |
| C. | Fossa ovalis |
| D. | Ileum |
| Answer» E. | |
| 1690. |
all mammals, whale, dolphin, bat, monkey and horse have some common trait, but they also show conspicuous differences. This is due to the phenomenon of |
| A. | normalisation |
| B. | genetic drif |
| C. | convergence |
| D. | divergence |
| Answer» E. | |
| 1691. |
Which of the following leads to evolution ? |
| A. | Separation of species leading to evolution |
| B. | Differentiation of species |
| C. | Loss of few advanced characters |
| D. | Differentiation and adaption of species as unique entities |
| Answer» E. | |
| 1692. |
Evolution and natural selection is demonstrated by |
| A. | DDT resistance in mosquito |
| B. | sickel cell anaemia in pygmies |
| C. | industral melanism |
| D. | all above |
| Answer» E. | |
| 1693. |
Potato and sweet potato ______. |
| A. | have edible parts which are homologous organs |
| B. | have edible part which are analogous organs |
| C. | have been introduced in India from the same place |
| D. | None of the above |
| Answer» C. have been introduced in India from the same place | |
| 1694. |
The Jurassic period belongs to the ............ era. |
| A. | proterozoic |
| B. | archezoic |
| C. | mesozoic |
| D. | cenozoic |
| Answer» D. cenozoic | |
| 1695. |
Mesozoic era is called golden period of ______. |
| A. | bird |
| B. | amphibians |
| C. | reptiles |
| D. | pisces |
| Answer» D. pisces | |
| 1696. |
The best way of dating fossils recent origin is by ______. |
| A. | radio carbon method |
| B. | uranium lead method |
| C. | potassium argon method |
| D. | a combination of all these |
| Answer» E. | |
| 1697. |
The tracking of evolutionary history of organisms is ______. |
| A. | ontogeny |
| B. | phylogeny |
| C. | analogy |
| D. | homology |
| Answer» C. analogy | |
| 1698. |
Darwin’s theory of natural selection is objected, because it |
| A. | stresses upon slow and small variations |
| B. | explains the adaption of certain inherited characters |
| C. | stresses on interspecific competition |
| D. | explains that natural calamities take a heavy annual toll of lives |
| Answer» C. stresses on interspecific competition | |
| 1699. |
Which one of the following phenomena supports Darwin’s concept of natural selection in organic evolution ? |
| A. | Development of transgenic animals |
| B. | Production of ‘Dolly’ the sheep by clothing |
| C. | Prevalence of pesticide resistant insects |
| D. | Development of organs from ‘stem cells’ for organ transplantation |
| Answer» C. Prevalence of pesticide resistant insects | |
| 1700. |
Mark the correct set._ans_key_Column I Column II_ans_key_I. Slow evolution A. Non-progressive_ans_key_II. Environment is responsible for evolution B. Aristotle_ans_key_III. Homologous C. Bird wing and butterfly wing_ans_key_IV. Analogous organ D. Wing of bird and hose limb |
| A. | I – A, II – B, III – D, IV – C |
| B. | I – B, II – A, III – D, IV – C |
| C. | I – B, II – A, III – C, IV – D |
| D. | I – B, II – C, III – D, IV – A |
| Answer» B. I – B, II – A, III – D, IV – C | |