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Biological Classification MCQ for NEET. We covered all the Biological Classification MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on Biological Classification for NEET Students
Which microorganism forms a mutualistic relationship with plant roots?
a) Azospirillum
b) Glomus
c) Cyanobacteria
d) Azotobacter
Option b – Glomus
The majority of activated sludge is directed to the
a) aeration tank
b) anaerobic digester
c) aerobic digester
d) sedimentation tank
Option b – anaerobic digester
Microorganisms that improve soil fertility and reduce the reliance on chemicals are called
a) bioactive agents
b) biopesticides
c) biofortifiers
d) biofertilizers
Option d – biofertilizers
Which restriction enzyme was discovered first?
a) SalI
b) BamHI
c) EcoRI
d) Hind II
Option d – Hind II
The toxin produced by Bacillus thuringiensis becomes active in which condition?
a) High temperature
b) Acidic stomach environment
c) Mechanical churning in the gut
d) Alkaline pH of the insect gut
Option d – Alkaline pH of the insect gut
Choose the incorrect statement regarding insulin:
a) Chains A and B in insulin are joined by glycosidic bonds
b) Mature insulin does not contain the C peptide
c) In mammals, insulin is initially produced as a pro-hormone
d) E. coli is genetically modified to produce insulin
Option a – Chains A and B in insulin are joined by glycosidic bonds
During DNA extraction from plants, which enzyme is NOT typically used?
a) Ribonuclease
b) Protease
c) Chitinase
d) Cellulase
Option c – Chitinase
The first instance of clinical gene therapy in 1990 was used to treat
a) Rheumatoid arthritis
b) Down syndrome
c) Diabetes mellitus
d) Adenosine deaminase deficiency
Option d – Adenosine deaminase deficiency
Before the findings of Avery, MacLeod, and McCarty, the hereditary material was believed to be
a) DNA
b) RNA
c) Protein
d) Polysaccharide
Option c – Protein
Which of the following is an example of a biofortified plant?
a) Atlas-66
b) Karan rai
c) Himgiri
d) Pusa A-4
Option a – Atlas-66
Assertion: DNA replication takes place at a region known as the replication fork.
Reason: DNA polymerase initiates replication without assistance.
a) Both assertion and reason are correct; reason explains the assertion
b) Both are correct, but reason doesn’t explain assertion
c) Assertion is true; reason is false
d) Both are incorrect
Option b – Both are correct, but reason doesn’t explain assertion
Select the correct option from the following:
Statement I: Toddy is made by fermenting palm sap.
Statement II: Roquefort cheese matures through bacterial growth.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option a – Only Statement I is correct
Which codon does NOT encode the amino acid serine?
a) UCU
b) UCC
c) UAA
d) UCG
Option c – UAA
In 1963, India introduced which high-yielding, disease-resistant wheat varieties?
a) Jaya and Ratna
b) Sonalika and Ratna
c) Semi-dwarf and Jaya
d) Sonalika and Kalyan Sona
Option d – Sonalika and Kalyan Sona
Select the correct statement pair:
Statement I: DNA polymorphism refers to frequent heritable mutations in a population.
Statement II: Such variations are more commonly found in non-coding regions of DNA.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option c – Both statements are correct
Identify the incorrect statement about transcription:
a) RNA polymerase I transcribes 18S rRNA
b) RNA polymerase II synthesizes 28S rRNA
c) RNA polymerase II is responsible for 5s rRNA
d) hnRNA serves as a precursor to mRNA
Option b – RNA polymerase II synthesizes 28S rRNA
Which molecule supplies the energy required during DNA synthesis?
a) ATP
b) Deoxyribonucleoside triphosphate
c) GTP
d) UTP
Option b – Deoxyribonucleoside triphosphate
What feature of plasmids makes them ideal vectors in genetic engineering?
a) Ability to integrate into chromosomal DNA
b) Ability to infect the host
c) Capacity to carry foreign genes
d) Resistance to restriction enzymes
Option c – Capacity to carry foreign genes
Atlas 66 is a wheat cultivar noted for its high
a) vitamin content
b) protein content
c) micronutrient level
d) mineral content
Option b – protein content
The removal of introns and linking of exons in a precise sequence is called
a) Termination
b) Splicing
c) Capping
d) Tailing
Option b – Splicing
Assertion: DNA is the genetic material as demonstrated by Avery, MacLeod, and McCarty.
Reason: DNase treatment had no effect on transformation.
a) Both assertion and reason are correct and reason explains the assertion
b) Both are correct, but reason does not explain assertion
c) Assertion is correct; reason is incorrect
d) Both are incorrect
Option c – Assertion is correct; reason is incorrect
Select the accurate statements:
Statement I: Bees pollinate plants such as Brassica, sunflower, and pear.
Statement II: Apiculture demands high labor.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option a – Only Statement I is correct
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