Biological Classification Test 7 – MCQs with Answers and Explanation

Biological classification is a crucial chapter in Class 11 Biology that helps students understand the diversity of life forms and their organization. This topic is very important for board exams and competitive exams like NEET. The following test includes important MCQs based on Mycoplasma, protozoans, fungi, prions, and viroids. Practicing these questions will help you strengthen your concepts and improve your performance in exams.

The first question asks about a correct statement regarding Mycoplasma. The correct answer is that Mycoplasma lack a cell wall. This makes them unique among prokaryotes and resistant to antibiotics that target cell walls. The second question focuses on protozoans and asks for an incorrect statement. The correct answer is that protozoans reproduce only sexually, which is wrong because they can reproduce both sexually and asexually.

The third question asks about the organism responsible for causing malaria. The correct answer is Plasmodium, which is a parasitic protozoan transmitted by mosquitoes. The fourth question is about the major component of the fungal cell wall. The correct answer is chitin, which provides strength and rigidity to fungal cells.

The fifth question again focuses on Mycoplasma and asks for an incorrect statement. The correct answer is that Mycoplasma contain peptidoglycan in their cell walls, which is incorrect because they do not have a cell wall. The sixth question asks about prions, and the correct answer is that prions are infectious proteins that do not contain nucleic acids.

The seventh question highlights the difference between viroids and viruses. The correct answer is that viroids lack a protein coat and consist only of a small RNA molecule. The eighth question is about fungi, and the correct answer is that fungi have chitin in their cell walls.

The ninth question asks for a correct statement about protozoans. The correct answer is that protozoans include both free-living and parasitic forms. The tenth question focuses on Euglena and its unique feature. The correct answer is that it can switch between autotrophic and heterotrophic nutrition depending on environmental conditions.

Overall, this test covers important and frequently asked concepts from biological classification. Regular practice of such MCQs will help you build a strong foundation and improve your accuracy in exams. It is always recommended to revise NCERT thoroughly and solve multiple practice questions to gain confidence and better results.