NEET CONCEPT MCQ | Cha -9 |STD -12 | BIOLOGY | Eng medium

 

NEET CONCEPT  MCQ | Cha -9 |STD -12 

1. Which of the following statements is incorrect regarding objectives of livestock improvement ?
( a ) To produce animals with high yield .
( b ) To produce animals sensitive to various diseases .
( c ) To produce animals with high growth rate .
( d ) To produce animals that can adapt to varied climate conditions

2. Identify the mismatched pair .
( a ) Penicillin             -   Widely used in World War II
( b ) Cyclosporin A    -  An immunosuppressive agent
( c ) Statin                  -  Used as blood clotting agent
( d ) Tetracycline      -  Obtained from Streptomyces aureofaciens

3. Which of the following is / are not the consequence of inbreeding ?
( a ) Reduces fertility  ( b ) Exposes harmful recessive genes
( c ) Accumulation of superior genes ( d ) Increases heterozygosity

4. Microbe which could act as biocontrol agent is / are
( a ) Bacillus thuringiensis ( b ) Nucleopolyhedrovirus
( c ) Trichoderma ( d ) all of these .

5. The breeders try to incorporate certain characters in the hybrid crop plants , except
( a ) stress tolerance        ( b ) pathogen sensitivity
( c ) herbicide resistance ( d ) pest tolerance .

6. Bread is fermented using.............. ommonly known as baker's yeast .
( a ) Propionibacterium shermanii   ( b ) Candida utilis 
( c ) Lactobacillus              ( d ) Saccharomyces cerevisiaec

7. The process of improving nutritional quality of breeding crops is termed as
( a ) biomagnification   ( b ) micropropagation  
( c ) biofortification       ( d ) insemination .

8. Which among the given diseases cannot be treated using antibiotics ?
( a ) Diphtheria      ( b ) Leprosy
( c ) Chicken pox   ( d ) Whooping cough 

9. Which microbe cannot be a single cell protein ( SCP ) producer ?
( a ) Clostridium botulinum   ( b ) Spirulina ( c ) Methylophilus methylotrophus ( d ) Candida utilis

10. Which bacteria carries out third stage of anaerobic digestion in biogas production ?
( a ) Clostridium             ( b ) Methanobacterium
( c ) Propionibacterium ( d ) Pseudomonas .

11..........bacteria is capable of biomass production of protein .
( a ) Methylophilus methylotrophus ( b ) Penicillium notatum
( c ) Clostridium botulinum               ( d ) Propionibacterium shermanii

12. The unwashed culture plate of growing mould where Staphylococci could not grow lead to the discovery of which antibiotic ?
( a ) Streptomycin  ( b ) Penicillin ( c ) Tetracyclin   ( d ) Both

13. Pusa swarnim is the variety of which crop plant ?
( a ) Wheat ( b ) Cauliflower ( c ) Brassica ( d ) Okra

14. Which of the following is not attributed to lactic acid bacteria ( LAB ) ?
( a ) Convert milk to curd .
( b ) Check growth of disease causing microbes in human stomach .
( c ) Increase vitamin B12 in curd .
( d ) Produces single cell protein .

15. In a given crop , entire collection of living plant tissues or seeds having all types of alleles for all genes is called
( a ) gene bank  ( b ) germplasm collection
( c ) seed bank   ( d ) protoplasm collection .

16. Consider the following statements and select the correct option stating which ones are true ( T ) and which ones are false ( F ) .
A. Methanogens help in the production of biogas .
B. Spirulina is a microscopic fungi grown as source of good protein .
C. Streptokinase is used for removing clots from the blood vessels .
D. Bird flu virus enters in the chicken through human beings


        A   B   C   D
( a ) F    T   T   F
( b ) T    F   F   F
( c ) T    F   T   F
( d ) T    T   F   F

17. The majority of baculoviruses used as biological control agents belong to the genus
( a ) Streptococcus             ( b ) Mycobacterium
( c ) Nucleopolyhedrovirus ( d ) Staphylococcus .

18. Select the mismatched pair .
( a ) MOET -  Herd improvement programme
( b ) SCP    -  Alternate source of proteins
( c ) LAB    -   Partially digests milk proteins
( d ) BOD   -   Biological control of diseases

19. Match the acid producing microbes with their corresponding products .
            List I                                  List II
A. Acetobacter aceti           ( i )  Lactic acid
B. Clostridium butylicum ( ii ) Citric acid
C. Lactobacillus                   ( iii) Acetic acid
D. Aspergillus niger           ( iv ) Butyric acid

( a ) A- ( iii ) , B- ( i ) , C- ( iv ) , D- ( ii ) ( b ) A- ( iii ) , B- ( iv ) , C- ( i ) , D- ( ii )
( c ) A- ( ii ) , B- ( i ) , C- ( iv ) , D- ( iii ) ( d ) A- ( i ) , B- ( iv ) , C- ( ii ) , D- ( iii )

20. Green revolution was a period when various plant breeding techniques led to
( a ) the development of high - yielding and disease resistant varieties
( b ) dramatic increase in food production
( c ) the formation of hybrids having undesirable characters
( d ) both ( a ) and ( b ) .

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Answer Key

1 . ( c ) 3. ( a ) 6 . ( b ) 8 . ( d ) 11. ( 0 ) 13. ( d ) 16. ( a ) 18. ( d ) 2 . ( c ) 7. ( b ) 12. ( a ) 17 . 4. ( b ) 9. ( b ) 14. ( c ) 19. ( a ) 5. ( d ) 10. ( a ) 15. ( b ) 20. ( c )

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MANISH MEVADA

M.Sc, M.Phil, B.Ed

GUJARAT BIOLOGY NEET

NEET MATERIAL IN GUJARATI 

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