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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.
| 3101. |
Slash and burn agriculture means.. |
| A. | Agriculture on desert land |
| B. | Jhum cultivation |
| C. | Cultivation on hills |
| D. | Reforestation. |
| Answer» C. Cultivation on hills | |
| 3102. |
By studying analogous structures we look for ______. |
| A. | similarities in appearance and function but different in structure. |
| B. | similarities in appearance but differences in functions. |
| C. | Similarities in organ structure. |
| D. | Similarities in cell make up. |
| Answer» B. similarities in appearance but differences in functions. | |
| 3103. |
Green house Effect is the cumulative result of the influence of certain gases. Identify the gas which is not involved in the influence Karnataka2005 |
| A. | CO |
| B. | CFC |
| C. | N2 |
| D. | CH4 |
| Answer» D. CH4 | |
| 3104. |
Microevolution takes place due to |
| A. | somatogenic variation |
| B. | blastogenic variation |
| C. | continuous variation |
| D. | Successive variation |
| Answer» C. continuous variation | |
| 3105. |
For the given statement which option is correct?_ans_key_Statement_ans_key_(X)Deforestation is one of the important factor for global warming._ans_key_(Y)Green house gas CO2 increases due to deforestation. . |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» B. Both X and Y are correct.Y does not give correct explanation for X | |
| 3106. |
If fertilizers are added to fresh water .. AIIMS2002 |
| A. | Plants will die |
| B. | Eutropication will occur |
| C. | Fish population will decrease |
| D. | Overall animal population will decrease |
| Answer» C. Fish population will decrease | |
| 3107. |
With the help of electrostatic precipitator which Air pollutant produced by cement factory is separated? |
| A. | NO2 |
| B. | CO |
| C. | SO2 |
| D. | SPM |
| Answer» E. | |
| 3108. |
Which gas is responsible for increase in atmosphere temperature? |
| A. | O 2 |
| B. | CO2 |
| C. | SO2 |
| D. | CO |
| Answer» C. SO2 | |
| 3109. |
Heredity or inheritance of specific traits became clearer due to |
| A. | Lamarck's theory |
| B. | Mendel worked on garden peas |
| C. | Darwinism |
| D. | Neo-Darwinism |
| Answer» C. Darwinism | |
| 3110. |
For the given statement which option is correct?_ans_key_Statement_ans_key_(X)Organic farming means agriculture with the help of chemicals._ans_key_(Y)500 members of Haryana Kissan welfare club have adopted this agricultural practice. |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» E. | |
| 3111. |
For the given statement which option is correct?_ans_key_Statement:_ans_key_(X)Unleaded petrol should be used in automobiles with catalytic converter to reduce pollution._ans_key_(Y)Lead in the petrol inactivates Rhodium and palladium . |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» B. Both X and Y are correct.Y does not give correct explanation for X | |
| 3112. |
Which of the following are not the examples of analogous structures? |
| A. | Wings of bat and butterfly. |
| B. | Wings of bat and forelimb of cattle. |
| C. | Thorn and spine. |
| D. | Tendril of Lathyrus and tendril of Gloriossa. |
| Answer» C. Thorn and spine. | |
| 3113. |
Domestic sewage with -------% impurities is unfit for human use. |
| A. | 0.2% |
| B. | 0.01% |
| C. | 0.1% |
| D. | 0.02% |
| Answer» D. 0.02% | |
| 3114. |
How many molecules of ozone canbe decomposed by one atom of chlorine? |
| A. | 100 |
| B. | 2.00.000 |
| C. | 1.00.000 |
| D. | 1000 |
| Answer» D. 1000 | |
| 3115. |
Which of the following sentences is true about the evolutionary process? |
| A. | There is no real 'progress' in the idea of evolution. |
| B. | humans are unique, a totally new type of organism. |
| C. | progress is nature's religion. |
| D. | Evolution of life forms was rapid in the beginning ages. |
| Answer» B. humans are unique, a totally new type of organism. | |
| 3116. |
Which of the following does not occur when the sewage is discharged into the river? |
| A. | Eutropication |
| B. | Depletion of O2 |
| C. | Increase in O2 |
| D. | Algal bloom DPMT2003 |
| Answer» B. Depletion of O2 | |
| 3117. |
The difference between Homo sapiens and the Homo erectus was ____. . |
| A. | Homo sapiens originated in Africa while Homo erectus was in Asia |
| B. | Homo erectus were much smaller in size than homo sapiens. |
| C. | Homo erectus stayed in Africa while Homo sapiens did not. |
| D. | The size of their brain of Homo eructus was smaller to homo sapiens |
| Answer» E. | |
| 3118. |
Human being belongs to the species of_____. |
| A. | Homo erectus |
| B. | Homo habillis |
| C. | Homo sapiens |
| D. | Hominidae |
| Answer» D. Hominidae | |
| 3119. |
__________ was a predecessor of Darwin and he developed the theory of acquired characteristics. |
| A. | Weismann |
| B. | Mendel |
| C. | Malthus |
| D. | Lamarck |
| Answer» E. | |
| 3120. |
For the given statement which option is correct? Statement:_ans_key_(X)DDT and plastic both are nonbiodegradable Waste_ans_key_(Y) As the time passes, Pollutants of domestic sewage does not remain pollutants. |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» C. X is correct, Y is wrong | |
| 3121. |
Which of these is not a living fossil? |
| A. | Archaeopteryx |
| B. | Duck-billed platypus |
| C. | Lungfish |
| D. | Frog |
| Answer» B. Duck-billed platypus | |
| 3122. |
Alternative forms of a gene are called _____________. |
| A. | loci |
| B. | multiples |
| C. | Chromosomes |
| D. | Alleles |
| Answer» E. | |
| 3123. |
Neural system consists of paired ganglia connected by lateral nerves to double ________ in annelida. |
| A. | ventral nerve cord |
| B. | dorsal nerve cord |
| C. | Anterior nerve cord |
| D. | posterior nerve cord |
| E. | Bufo |
| Answer» B. dorsal nerve cord | |
| 3124. |
Water vascular system which help in ________ |
| A. | Cocomotion |
| B. | capture and transport of food |
| C. | respiration |
| D. | all above |
| E. | Bufo |
| Answer» E. Bufo | |
| 3125. |
Ascaris is found in |
| A. | body cavity |
| B. | tissue |
| C. | alimentary canal |
| D. | lymph nodes |
| E. | Bufo |
| Answer» D. lymph nodes | |
| 3126. |
Function of suckers cell in liverflulke |
| A. | Defense |
| B. | Roproduction |
| C. | Locomotion |
| D. | Absorb nutrients |
| E. | Bufo |
| Answer» E. Bufo | |
| 3127. |
The pseudocoelomate among these is ________ |
| A. | porifera |
| B. | Annelida |
| C. | Mollusca |
| D. | Aschelminthes |
| E. | Bufo |
| Answer» E. Bufo | |
| 3128. |
An excretory system is absent in |
| A. | Sepia |
| B. | Crab |
| C. | Starfish |
| D. | Earthworm |
| E. | Bufo |
| Answer» D. Earthworm | |
| 3129. |
Select the correct option for the region labelled as A, B and C in the given diagram ? |
| A. | A = Never cord |
| B. | A = Nerve cord B = Notochord B = Noto chord C = Gill slits C = post and part D = Post anal part D = Gill slits |
| C. | A = Notochord |
| D. | A = post anal part B = Gill slits B = Gill slits C = Neeve chord C = Nerve cord D = Postanal part D = Notochord |
| E. | Bufo |
| Answer» D. A = post anal part B = Gill slits B = Gill slits C = Neeve chord C = Nerve cord D = Postanal part D = Notochord | |
| 3130. |
The exeretory organ in cockroach is |
| A. | green gland |
| B. | malpighian tubules |
| C. | ne phridia |
| D. | kidney |
| E. | Bufo |
| Answer» C. ne phridia | |
| 3131. |
Identify the animal |
| A. | Ascidia |
| B. | Salpa |
| C. | Amphioxus |
| D. | Doliolum |
| E. | Bufo |
| Answer» B. Salpa | |
| 3132. |
Blood sucking animal is ________ . |
| A. | Neris |
| B. | Earthworm |
| C. | a & b |
| D. | Leech |
| E. | Bufo |
| Answer» E. Bufo | |
| 3133. |
In which of the following phyla, while the adult shows radial symmetry, the larva shows bilateral symmetry ? |
| A. | Mollusca |
| B. | Echinodermata |
| C. | Arthropoda |
| D. | Annelida |
| E. | Bufo |
| Answer» C. Arthropoda | |
| 3134. |
What does A, B and C indicates in the given diagram ? |
| A. | A = head B = tail C = female |
| B. | A = head B = tail C = male |
| C. | A = tail B = head C = female |
| D. | A = tail B = head C = male |
| E. | Bufo |
| Answer» C. A = tail B = head C = female | |
| 3135. |
Match the following columns and select the correct option. |
| A. | p - (ii), q - (iii), r - (iii), s - (iv) |
| B. | p - (iii), q - (iv), r - (ii), s - (i) |
| C. | p - (ii), q - (iv), r - (i), s - (iii) |
| D. | p - (i), q - (ii), r - (iii), s - (iv) |
| E. | Bufo |
| Answer» C. p - (ii), q - (iv), r - (i), s - (iii) | |
| 3136. |
The mouth contains a file-like rasping organ for fooding, called ________ in Mollusco. |
| A. | radulla |
| B. | medulla |
| C. | Gizzard |
| D. | teeth |
| E. | Bufo |
| Answer» B. medulla | |
| 3137. |
Match the fllowing columns and select the option shows correctly matched pairs |
| A. | p - (ii), q - (iv), r - (iii), s - (i) |
| B. | p - (ii), q - (i), r - (iii), s - (iv) |
| C. | p - (ii), q - (iv), r - (i), s - (iii) |
| D. | p - (i), q - (ii), r - (iv), s - (iii) |
| E. | Bufo |
| Answer» D. p - (i), q - (ii), r - (iv), s - (iii) | |
| 3138. |
Choose the correct combination of labeling from the option given |
| A. | A = collar |
| B. | A = proboscis B = trunk B = collar C = proboscis C = trunk |
| C. | A = proboscis |
| D. | A = collar B = collar B = trunk C = tail C = tail |
| E. | Bufo |
| Answer» C. A = proboscis | |
| 3139. |
In the given diagram what does ‘A’ represent ? |
| A. | Hooks |
| B. | suckers |
| C. | Flame cell |
| D. | Ostia |
| E. | Bufo |
| Answer» C. Flame cell | |
| 3140. |
This is the largest phylum of Animal on the earth. |
| A. | Mollusca |
| B. | Amphibia |
| C. | Arthropoda |
| D. | Aves |
| E. | Bufo |
| Answer» D. Aves | |
| 3141. |
The body is cylindrical and composed of ________ in Hemichordata |
| A. | Proboscis |
| B. | collar |
| C. | trunk |
| D. | all the above |
| E. | Bufo |
| Answer» E. Bufo | |
| 3142. |
Into how many sub-phylum chordata is divided ? |
| A. | two |
| B. | four |
| C. | six |
| D. | three |
| E. | Bufo |
| Answer» E. Bufo | |
| 3143. |
Which is correct for earth worm |
| A. | Segments |
| B. | parapodia |
| C. | Nephridia |
| D. | all of given |
| E. | Bufo |
| Answer» E. Bufo | |
| 3144. |
Choose correct option for in Hemichordat-a |
| A. | I = circulatory system - open II = Respiration - gills III = Excretory system - proboscis gland |
| B. | I = circulatory system - close II = Pespiration - gills III = Excretory system - green gland |
| C. | I = circulatory system - open II = Respiration - gills III = Excretory system - kideny |
| D. | I = circulatory system - open II = Respiration - lungs III = Excretory system - proboscis gland |
| E. | Bufo |
| Answer» B. I = circulatory system - close II = Pespiration - gills III = Excretory system - green gland | |
| 3145. |
Which of the following is a characteristic feature of sponges ? |
| A. | Tissue level of organization |
| B. | Presence of ostia |
| C. | Extra ccllular digetion |
| D. | Indirect deveplopment |
| E. | Bufo |
| Answer» C. Extra ccllular digetion | |
| 3146. |
________ which help in swimming in Annelida. |
| A. | parapodia |
| B. | Nephridia |
| C. | sucker |
| D. | seaments |
| E. | Bufo |
| Answer» B. Nephridia | |
| 3147. |
The body of arthropods is covered by ________ exoskoleton. |
| A. | calcium carbonate |
| B. | calcium sulphate |
| C. | chitiarous |
| D. | conchin |
| E. | Bufo |
| Answer» D. conchin | |
| 3148. |
The respiratory organ in arthrpoda. |
| A. | gill |
| B. | book gill |
| C. | tracheal system |
| D. | all of given |
| E. | Bufo |
| Answer» E. Bufo | |
| 3149. |
Gastro-vascular cavity is located in......... |
| A. | Earth worm |
| B. | Hydra |
| C. | Liver fluke |
| D. | Ascaris |
| E. | Bufo |
| Answer» C. Liver fluke | |
| 3150. |
Assertation (A) Zoological survey of India is located in Mumbai. Reason (R) Government museum is located in Chennai. |
| A. | A and R both are true and R is correct explanation of R |
| B. | A and R both are true and R is not correct explanation of R |
| 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 | |