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Biological-Classification MCQs
Class XI Biology
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NCERT Based
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NEET Practice
📘 Concept Based
📝 Exam Level
🤖 AI Explanations
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300 questions in this chapter
Question 171 of 300
📘 CLASS XI
Some fungi form symbiotic associations with the roots of higher plants. This specific association is termed:
When fungi associate with the roots of higher plants, the symbiotic association is called mycorrhiza.
Question 172 of 300
📘 CLASS XI
Neurospora is a fungus extensively used in biochemical and genetic work. To which class does it belong?
Neurospora is an important member of Ascomycetes and is widely used in biochemical and genetic studies.
Question 173 of 300
📘 CLASS XI
Which of the following is true regarding the physical size of prions?
Prions are infectious protein particles that are similar in size to viruses.
Question 174 of 300
📘 CLASS XI
After taking over the host machinery for replication, what ultimately happens to the host cell during viral infection?
Viruses are obligate parasites that replicate inside host cells and ultimately destroy them.
Question 175 of 300
📘 CLASS XI
Which of the following is correctly matched with fungal sexual reproduction?
Sexual reproduction in fungi occurs by oospores, ascospores and basidiospores. Deuteromycetes have no known sexual stage.
Question 176 of 300
📘 CLASS XI
Which of the following represents a disease caused by a virus in plants?
Tobacco mosaic disease is caused by Tobacco Mosaic Virus (TMV).
Question 177 of 300
📘 CLASS XI
The protein coat of viruses is called the capsid. What are its individual subunits called?
Capsomeres are the protein subunits that collectively form the viral capsid.
Question 178 of 300
📘 CLASS XI
Creutzfeldt-Jakob disease (CJD) in humans is analogous to which disease in cattle?
CJD in humans is analogous to bovine spongiform encephalopathy (mad cow disease) in cattle.
Question 179 of 300
📘 CLASS XI
Lichens are considered excellent pollution indicators because they:
Lichens are highly sensitive to pollution and therefore fail to grow in polluted environments.
Question 180 of 300
📘 CLASS XI
According to Whittaker's classification, which kingdom shows tissue or organ level body organisation and autotrophic nutrition?
Kingdom Plantae possesses tissue/organ level organisation and performs autotrophic nutrition.
