Biological Classification Test 3 – MCQs with Answers and Explanation
Biological classification is a fundamental topic in Class 11 Biology that helps students understand how different organisms are grouped based on their characteristics. This chapter is very important for board exams as well as competitive exams like NEET. The following test includes important multiple-choice questions based on kingdoms such as Monera, Plantae, and Fungi, along with concepts related to viruses and prions. Practicing these questions will strengthen your conceptual clarity and improve your exam performance.
The first question asks which kingdom includes prokaryotic organisms. The correct answer is Monera because all organisms in this kingdom lack a true nucleus and membrane-bound organelles. The second question focuses on organisms that lack a cell wall. The correct answer is Mycoplasma, which is unique among prokaryotes as it does not possess a cell wall.
The third question asks about a feature that is not a characteristic of Kingdom Plantae. The correct answer is heterotrophic members, as plants are autotrophic and synthesize their own food through photosynthesis. The fourth question highlights an incorrect statement about viruses. The correct answer is that viruses contain both DNA and RNA, which is wrong because viruses contain either DNA or RNA, but not both.
The fifth question tests knowledge of Kingdom Monera and asks for an incorrect statement. The correct answer is that monerans reproduce only by sexual reproduction, which is false because they primarily reproduce asexually through binary fission. The sixth question asks about the structure of a virus, and the correct answer is that it is an acellular structure consisting of a protein coat and nucleic acid.
The seventh question again checks understanding of Monera. The incorrect statement is that monerans contain membrane-bound organelles, which is not true because prokaryotes lack such organelles. The eighth question deals with nitrogen fixation, and the correct answer is cyanobacteria, which can fix atmospheric nitrogen and play an important role in ecosystems.
The ninth question is about fungi and their mode of reproduction. The correct answer is Rhizopus, which reproduces sexually through zygospores. The final question focuses on prions, and the correct answer is that they lack a nucleic acid genome. Prions are infectious proteins that do not contain DNA or RNA.
Overall, this test covers the most important concepts from biological classification. Regular practice of such MCQs will help students build a strong foundation and perform better in exams. It is always recommended to revise NCERT thoroughly and solve multiple practice questions to achieve higher accuracy and confidence.