10+ Most Important Biological Classification NEET Questions

Hey there, NEET aspirants! Are you ready to ace biology? Our biological classification class 11 NEET questions MCQ with answers are here to help you out.

Every year, the biological classification chapter brings along 1-2 questions in the NEET exam, so it's crucial for your preparation. Here at Biologynotes, we've crafted these new biological classification NEET questions with answers after analyzing past papers. By tackling these questions, you'll master the MCQ on Biological Classification concepts tested in the NEET exam.

Our experienced team has covered all the important topics, including assertion-reasoning questions, to boost your confidence. So, gear up and nail that NEET exam with our user-friendly biological classification class 11 NEET questions with answers.

Biological Classification NEET Questions PYQ:

1. Which of the following is a correct statement? (NEET - 2022)
A. Mycoplasma have DNA, Ribosomes, and cell walls.
B. Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.
C. Bacteria are exclusively heterotrophic organisms.
D. Slime molds are saprophytic organisms classified under Kingdom Monera.
Correct Option: 2. Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.

Explanation: Cyanobacteria, also known as blue-green algae, are a group of photosynthetic bacteria that produce oxygen as a byproduct of photosynthesis. They are considered autotrophic organisms because they can synthesize their own organic compounds from inorganic substances. Additionally, they are classified under the Kingdom Monera due to their prokaryotic cellular organization.

2. Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by_________________ (NEET - 2022)
A. Bacterium
B. Virus
C. Viroid
D. Prion
Correct Option: 4. Prion

Explanation: Mad cow disease (bovine spongiform encephalopathy) and Creutzfeldt-Jakob disease in humans are caused by prions, which are infectious proteins. Unlike viruses or bacteria, prions lack genetic material and are believed to cause disease by inducing misfolding of normal cellular proteins into abnormal shapes.

3. Which of the following is correct about viroids? (NEET - 2020)
A. They have free RNA without a protein coat.
B. They have DNA with a protein coat.
C. They have free DNA without protein coat.
D. They have RNA with a protein coat.
Correct Option: 1. They have free RNA without protein coat.

Explanation: Viroids are small infectious agents consisting of a short, circular single-stranded RNA molecule without a protein coat. They are simpler than viruses and do not encode any proteins. Their replication involves the host cell's RNA polymerase.

4. This component provides a sticky character to bacterial cells (NEET 2017)
A. Glycocalyx
B. Nuclear membrane
C. Cell wall
D. Plasma membrane
Correct Option: A. Glycocalyx

Explanation: Glycocalyx is a sticky layer external to the bacterial cell wall. It can be either a capsule or a slime layer, providing adherence to surfaces, protection against desiccation, and evasion of the host immune system.

5. Pick the incorrect statement (NEET-II 2016)
A. Diatoms are microscopic and float in water passively
B. Diatoms are chief producers in oceans
C. Diatomaceous earth is formed by the cell walls of diatoms
D. Walls of diatoms are easily destructible
Correct Option: D. Walls of diatoms are easily destructible

Explanation: Diatoms have cell walls called frustules, which are composed of silica and are highly durable. They are not easily destructible and are known for their intricate and resilient structure.

6. The imperfect fungi that are decomposers of litter and help in mineral cycling belong to (2015)
A. Basidiomycetes
B. Deuteromycetes
C. Ascomycetes
D. Phycomycetes
Correct Option: B. Deuteromycetes

Explanation: Deuteromycetes, also known as fungi imperfect, include fungi involved in decomposition processes, such as breaking down litter and recycling nutrients in ecosystems.

7. Pick the incorrect statement (2015)
A. Neurospora is used in the study of biochemical genetics
B. Penicillium is multicellular and produces antibiotics
C. Yeast is unicellular and used in fermentation
D. Morels and truffles are poisonous mushrooms
Correct Option: D. Morels and truffles are poisonous mushrooms

Explanation: Morels and truffles are highly prized edible fungi and are not poisonous. They are known for their culinary value and are considered delicacies in many cuisines.

8. A capsule is advantageous to a bacterium because (NEET 2013)
A. it allows the bacterium to attach to the surface
B. it allows the bacterium to “hide” from the host’s immune system
C. it protects means of locomotion
D. it protects the bacterium from desiccation
Correct Option: B. it allows the bacterium to “hide” from the host’s immune system

Explanation: Capsules provide protection to bacteria from phagocytosis by the host's immune system, allowing them to evade detection and destruction. They also help in adherence to surfaces and protect against desiccation

Biological Classification NEET Questions with Answers: 

1. What are the 5 kingdoms in classification?
a) Animalia, Plantae, Fungi, Protista, Monera
b) Mammalia, Plantae, Protista, Eubacteria, Archaea
c) Animalia, Plantae, Protista, Bacteria, Archaea
d) Animalia, Plantae, Fungi, Bacteria, Archaea
Answer: a) Animalia, Plantae, Fungi, Protista, Monera
Explanation: The five kingdoms in classification are Animalia, Plantae, Fungi, Protista, and Monera, as proposed by Robert Whittaker.

2. What is a taxon in biology?
a) A group of organisms at any level of classification
b) A single species
c) A group of organisms belonging to the same genus
d) A group of organisms belonging to the same family
Answer: a) A group of organisms at any level of classification
Explanation: A taxon is a group of organisms at any level of classification, such as species, genus, family, order, class, phylum, or kingdom.

3. What is the study of fungi called?
a) Bacteriology
b) Mycology
c) Virology
d) Entomology
Answer: b) Mycology
Explanation: Mycology is the scientific study of fungi, including their biology, ecology, genetics, and taxonomy.

4. What is the body of fungi known as?
a) Mycelium
b) Hyphae
c) Spore
d) Capsule
Answer: a) Mycelium
Explanation: The body of fungi is known as mycelium, which is composed of a network of thread-like structures called hyphae.

5. Who discovered viroids?
a) Stanley Prusiner
b) Wendell Stanley
c) Theodor O. Diener
d) Friedrich Miescher
Answer: c) Theodor O. Diener
Explanation: Viroids were discovered by Theodor O. Diener in 1971.

6. Who discovered prions?
a) Stanley Prusiner
b) Wendell Stanley
c) Theodor O. Diener
d) Friedrich Miescher
Answer: a) Stanley Prusiner
Explanation: Prions were discovered by Stanley Prusiner in the 1980s.

7. What are the objectives of biological classification?
a) To name organisms
b) To group organisms based on similarities and evolutionary relationships
c) To study organisms
d) All of the above
Answer: d) All of the above
Explanation: The objectives of biological classification include naming organisms, grouping them based on similarities and evolutionary relationships, and facilitating the study of organisms.

8. What does the Kingdom Monera include?
a) Plants
b) Fungi
c) Bacteria
d) Animals
Answer: c) Bacteria
Explanation: The Kingdom Monera includes bacteria, which are prokaryotic organisms lacking a nucleus and membrane-bound organelles.

9. Which of the following are included in the kingdom Monera?
a) Protists
b) Fungi
c) Bacteria
d) Plants
Answer: c) Bacteria
Explanation: Kingdom Monera includes bacteria, which are unicellular prokaryotic organisms.

10. Which is the unit of classification?
a) Species
b) Kingdom
c) Genus
d) Phylum
Answer: a) Species
Explanation: Species is the basic unit of classification, representing a group of organisms that can interbreed and produce fertile offspring.

FAQs on the biological classification NEET questions PDF

1. How important is biological classification for the NEET?
Answer: Biological classification is crucial for NEET exam preparation as it forms the foundation for understanding the diversity of living organisms. Questions related to biological classification, taxonomy, and characteristics of different groups frequently appear in NEET exams.

2. How to master biological classification Questions for NEET
Answer: To master in biological classification for NEET, focus on understanding the principles of classification, learn key characteristics of major taxa, practice classifying organisms based on given criteria, and solve more and more practice questions from NEET preparation books and previous years' question papers.

3. What are the questions that came from the chapter biological classification of class 11 in the NEET?
Answer: Questions from the chapter "Biological Classification" of Class 11 that may appear in NEET can cover topics like the five kingdom classification system, characteristics of different kingdoms (e.g., Monera, Protista, Fungi, Plantae, Animalia), classification hierarchy, and evolutionary relationships among organisms.

4. Is biological classification important for NEET 2024?
Answer: Yes, biological classification was important for NEET 2024 and remains so for subsequent exams. Understanding classification principles and characteristics of different taxa can help in answering various questions related to biodiversity and evolution.

5. Where should I study biological classification from? Is NCERT enough?
Answer: NCERT textbooks provide a solid foundation for studying biological classification for NEET. However, to ensure comprehensive preparation, it's beneficial to supplement your study with reference books specifically designed for NEET preparation. Additionally, online resources, video lectures, and practice questions can further enhance your understanding and mastery of the topic.

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