NEET Biology: Medical Entrance Biology Questions and Answers

Useful for Medical Entrance Exams: AIPMT / AFMC /JIPMER / AIIMS / JIPMER /Manipal UGET / CMC Vellore / AMU/ BHU

AIPMT 2012 Biology Questions and Answers

31 For transformation, micro - particles coated with DNA to be bombarded with gene are made up of
a) Silicon or platinum
b) Gold or Tungsten
c) Silver or platinum
d) Platinum or zinc

32. Cycas and Adiantum resemble each other in having
a) Cambium b) Vessels c) Seeds d) Motile sperms

33. PCR and Restriction Fragment Length Polymorphism (RFLP) are the methods for
PCR
a) DNA sequencing b) Genetic Fingerprinting c) Study of enzymes d) Genetic transformation

34. During gamete formation, the enzyme recombinase participates during
a) Prophase - I b) Prophase -II c) Metaphase – I d) Anaphase –II

35. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
a) Lignin b) Cellulose c) Cuticle d) Sporopollenin

36. Which one of the following is not a gaseous biogeochemical cycle in ecosystem
a) Nitrogen Cycle b) Carbon Cycle c) Sulphur Cycle d) Phosphorus Cycle

37. Which one of the following microbes forms symbiotic association with plants and helps then in their nutrition
a) Glomus b) Trichoderma c) Azotobacter d) Aspergillus

38. Which one single organism or the pair of organisms is correctly assigned to its or their named
taxonomic group
a) Yeast used in making bread and beer is a fungus
b) Nostoc and Anabaena are examples of protista
c) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium
d) Lichen is composite organism formed from the symbiotic association of an algae and a protozoan

39. F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of
a) Monohybrid cross with complete dominance
b) Monohybrid cross with incomplete dominance
c) Co - dominance
d) Dihybrid cross

40. A normal - visioned man whose father was colour blind, marries a woman whose father was also colour - blind. They have their first child as a daughter. What are the chances that this child would be colour blind
a) 25% b) 50% c) 100% d) Zero percent
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Answers:
31.b) Gold or Tungsten
32. d) Motile sperms
33. b) Genetic Fingerprinting
34. a) Prophase - I
35. d) Sporopollenin
36. d) Phosphorus Cycle
37. a) Glomus
38. a) Yeast used in making bread and beer is a fungus
39. b) Monohybrid cross with incomplete dominance
40. d) Zero percent
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AIPMT Biology 2012 Questions and Answers

21. Gymnosperms are also called soft wood spermatophytes because they lack
a) Thick walled tracheids b) Xylem fibres c) Cambium d) Phloem fibres

22. Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses
a) Mode of Nutrition b) Multiplication by fragmentation c) Diplontic life cycle d) Members of kingdom plantae

23. Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
a) Migration b) divergent evolution c) Adaptive radiation d) Natural selection

24. Monascus purpureus is a yeast used commercially in the production of :
a) Citric acid
b) Blood cholesterol lowering statins
c) Ethanol
d) Streptokinase for removing clots from the blood vessels

25. The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as :
a) Chemosynthetic autotrophs
b) Heterotrophic bacteria
c) Cyanobacteria
d) Archaebactera

26. Motile zygote of Plasmodium occurs in
a) Human RBCs b) Human liver c) Gut of female Anopheles d) Salivary glands of Anopheles

27. Widal Test is carried out to test :
a) HIV/AIDS b) Typhoid fever c) Malaria d) Diabetes mellitus

28. The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was :
a) Cro-magnan humans b) Ramapithecus c) Homo habilis d) Neanderthal human

29. Which part of the human ear plays no role in hearing as such but is otherwise very much required ?
a) Vestibular apparatus b) Ear ossicles c) Eustachian tube d) Organ of corti

30. Which one of the following is the correct statement for respiration in humans ?
Respiration
a) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis
b) About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino haemoglobin
c) Cigarette smoking may lead to inflammation of bronchi
d) Neural signals from pneumotoxic centre in pons region of brain can increase the duration of
inspiration


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Answers
21. a) Thick - walled tracheids
22. b) Multiplication by fragmentation
23. c) Adaptive radiation
24. b) Blood cholesterol lowering statins
25. b) Heterotrophic bacteria
26. c) Gut of female Anopheles
27. b) Typhoid fever
28. d) Neanderthal human
29. a) Vestibular apparatus
30.a) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis
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AIPMT Biology Previous Questions and Answers

11. Which one of the following is correct statement (AIPMT, 2012)
a) Antheridiophores and archegoniophores are present in pteridophytes
b) Origin of seed habit can be traced in pteridophytes
c) Pteridophyte gametophyte has a protonemal and leafy stage
d) In gymnosperm female gametophyte is free living

12. Which one of the following does not differ in E.coli and Chlamydomonas
a) Cell wall b) Cell membrane c) Ribosomes d) Chromosomal Organization
 AIPMT TEST
13. Removal of introns and joining of exons in a defined order during transcription is called
a) Slicing b) Splicing c) Looping d) Inducing

14. Best defined function of manganese in green plants is
a) Nitrogen fixation b) Water absorption c) Photolysis of water d) Calvin cycle

15. Which one of the following is wrong statement
a) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
b) Nitrosomonas and Nitrobacter are chemoautotrophs
c) Anabaena and Nostoc are capable of fixing nitrogen in free- living state also
d) Root nodule forming nitrogen fixers live as aerobes under free living conditions

16. The correct sequence of cell organelles during photorespiration is
a) Chloroplast, mitochondria, peroxisome
b) Chloroplast, - vacuole - peroxisome
c) Chloroplast, - Golgiboidies - mitochondria
d) Chloroplast, Rough Endoplasmic reticulum- Dictyosomes

17. Which one of the following is correctly matched
a) Chlamydomonas - Conidia b) yeast - Zoospores c) Onion - Bulb d) Ginger - Sucker

18. Which one of the following is a wrong statement
a) Greenhouse effect is a natural Phenomenon
b) Eutrophication is a natural phenomenon in freshwater bodies
c) Most of the forests have been lost in tropical areas
d) Ozone in upper part of atmosphere is harmful to animals

19. Yeast is used in the production of
a) Bread and beer b) Cheese and butter c) Citric acid and lactic acid d) Lipase and pectinase

20. Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency
a) golden rice b) Bt- Brinjal c) Flaver Savr Tomato d) Canolla

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Answers:
11. b) Origin of seed habit can be traced in pteridophytes
12. b) Cell membrane
13. b) Splicing
14. c) Photolysis of water
15. a) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
16. a) Chloroplast, mitochondria, peroxisome
17. c) Onion - Bulb
18. d) Ozone in upper part of atmosphere is harmful to animals
19. a) Bread and beer
20.a) golden rice
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AIPMT Biology Previous Questions and Answers

1. According to Oparin, which one of the following was not present in the primitive atmosphere of the earth (AIPMT, 2004)
origin of life
a) oxygen 
b) methane 
c) hygrogen 
d) water vapours

2. Which one of the following is not correctly matched?
a) Streptomyces - Antibiotic 

b) Serratia - Drug selection 
c) Spirulina- Single cell protein 
d) Rhizobium - Biofertilizer

3. When a fresh water protozoan possessing a contractile vacuole is placed in a glass containing marine water, the vacuole will
a) increase in number 

b) increase in size 
c) Disappear 
d) Decrease in size

4. Angiosperm have dominated the land flora primarily because of their
a) domestication by man 

b) nature of self pollination  
c) property of producing number of seeds 
d) power of adaptability to diverse habitats

5. In arthropoda, head and thorax are often used to form cephalothorax but in which one of the following classes is the body divided into head, thorax and abdomen
a) Insecta  
b) Myriapoda 
c) Crustacea 
d) Arachnida and Crustacea

6. One of the following is a very unique feature of mammalian body
a) Homeothermy 

b) Rib cage 
c) Presence of diaphragm  
d) Four chambered heart

7. The telomeres of eukaryotic chromosomes consists of a short sequence of
a) Thymine rich repeats 

b) Cytosine rich repeats  
c) Guanine rich repeats 
d) Adenine rich repeats

8. A nutritionally wild type organism which does not require any additional growth supplement is known as
a) phenotype 
b) autotroph 
c) holotype 
d) prototroph

9. The Ti plasmid is often used for making transgenic plants. The plasmid is found in
a) Azotobacter 
b) Rhizopium roots of leguminous plants 
c) Yeast 
d) Agrobacterium

10. The most likely reason for development of resistance against pesticides in insect in insect damaging a crop is
a) random mutations 

b) acquired heritable changes 
c) direct mutations 
d) genetic recombinations
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Answers
1.a) oxygen
2. b) Serratia - Drug selection
3. c) Disappear
4. d) power of adaptability to diverse habitats
5. a) Insecta
6. c) Presence of diaphragm
7. c) Guanine rich repeats

8. d) prototroph
9. d) Agrobacterium
10. a) random mutations
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Class 12 Biology Questions

1. ICBN stands for
a) International code of Botanical Nomenclature
b) International Congress of Biological Names
c) Indian Codes of Botanical Nomenclature
d)  Indian congress of Biological Names

2. Which of the following produces antibodies in blood?
a) Neutrophils
b) Eosinophil
c) Monocyte
d) Lymphocyte

3. Cells of Cardiac muscles are


Cardiac muscle
Cardiac muscles
a) Voluntary
b) Non striated
c) Spindle shaped
d) Branched

4. Myxedema is due to the deficiency of
a) Insulin
b) Proteins
c) Calcitonin
d) Thyroxin

5. Which of the following is not an analogous organ?
a) Wings of a bat
b) Wings of an insect
c) Fore limbs of a horse
d) Wings of abird

6.  A viral disease of man is
a) Tetanus
b) Poliomycelitis
c) diptheria
d) Leprosy

7. Gamete contains
a) Both alleles of a gene
b) One allele of a gene
c) All allele of a gene
d)  Four alleles of a gene

8. Cutaneous respiration takes place in
a) Whale
b) Earth worm
c)  Bat
d)  Fish

9.RNA which carries information from DNA for protein synthesis
a) m RNA                 
b) s- RNA
c) t- RNA
d) r-RNA

10. Genetic disorders in developing foetus can be detected by
a) Laproscopy
b) Dialysis
c)  X-Rays
d)  Aminocentesis

11. The digestive gland of prawn is
Hepatopancreas

a)  Liver
b) Pancreas
c)  Stomach
d)  Hepatopancreas

12. The exchange of respiratory gases in the lung occur in:
a) Trachea
b) Bronchi
c) Bronchiole
d)  Alveoli

13. The pace maker of the human heart is the
a)  AV node
b) SA node
c)  Nerve
d)  Purkinje fibres

14. The folding of a joint by drawing one articulating bone to the other is done by:
a)  Pronator muscle
b) Flexor muscle
c)  Extensor muscle
d) Suspinator muscle

15. The central fluid filled cavity of the blastula is known as
a) Archenteron
b) Blastocoel
c)  Blastocyst
d)  Morula

16.  The first photosynthesis organism were:
a) Cyanobacteria
b) Coacervates
c)  Organic polymers
d) Primodial Soup

17.  Organs similar in function but differing in structure and origin are:
a)  Vestigial organs
b) Analogous organs
c) Homologous organs
d) None of these

18. The theory of evolution of Natural selection was put forward by;
a) Lamark
b) Darwin
c)  Wiesmann
d)  Lederberg

19. The OX individual exhibits:
a) Down’s syndrome
b) Turners syndrome
c)  Kinefelter’s syndrome
d) Marfan syndrome

20. The deficiency of thyroxine in children results in
a) Dwarfism
b) Gigantism
c)  Cretinism
d)  Myxedema

Answers
1. a) International code of Botanical Nomenclature
2. d) Lymphocyte
3. d) Branched
4. d) Thyroxin
5. c) Fore limbs of a horse
6.  b) Poliomycelitis
7. b) One allele of a gene
8.  b) Earth worm
9. a) m RNA
10.d)  Aminocentesis      
11.  d)  Hepatopancreas
12.  d)  Alveoli
13.  b) SA node
14.  b) Flexor muscle
15.  b) Blastocoel
16.  a) Cyanobacteria
17.  b) Analogous organs
18.  b) Darwin
20.  d)  Myxedema
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