Biological Classification Practice Questions
NEET · Biology · 1681 free MCQs with instant results and detailed explanations.
1681
Total
336
Easy
744
Medium
601
Hard
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Topics in Biological Classification
Kingdom Monera
177
Kingdom Protista
173
Kingdom Fungi
166
Kingdom Plantae
169
Kingdom Animalia
153
Five Kingdom Classification
170
Monera
170
Protista
173
Fungi
168
Viruses and Viroids
162
Sample Questions from Biological Classification
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following organisms belong to the Kingdom Monera?
A.
Bacteria
B.
Fungi
C.
Plants
D.
Animals
Show Answer & Explanation
Correct Answer: A
Bacteria are the primary organisms classified under Kingdom Monera, which are prokaryotic in nature.
Q2
Easy
What is the primary cellular structure that differentiates prokaryotes from eukaryotes?
A.
Nucleus
B.
Mitochondria
C.
Chloroplast
D.
Ribosome
Show Answer & Explanation
Correct Answer: A
Prokaryotes lack a membrane-bound nucleus which is a distinct feature when compared to eukaryotes.
Q3
Easy
Which of the following is NOT a characteristic of Monera?
A.
Unicellular
B.
Eukaryotic
C.
Autotrophic
D.
Prokaryotic
Show Answer & Explanation
Correct Answer: B
Monera consists of prokaryotic organisms; therefore, they are not eukaryotic.
Q4
Medium
Which of the following is a characteristic feature of bacteria in the Kingdom Monera?
A.
Bacteria have a defined nucleus.
B.
Bacteria possess peptidoglycan in their cell walls.
C.
Bacteria are multicellular organisms.
D.
Bacteria reproduce only by mitosis.
Show Answer & Explanation
Correct Answer: B
Bacteria in the Kingdom Monera are distinguished by having peptidoglycan in their cell walls, which is a unique polymer that provides structural support.
Q5
Medium
Which type of reproduction is primarily observed in organisms classified under Kingdom Monera?
A.
Budding
B.
Binary fission
C.
Fragmentation
D.
Sexual reproduction
Show Answer & Explanation
Correct Answer: B
Organisms in Kingdom Monera, such as bacteria, primarily reproduce by binary fission, which is a form of asexual reproduction where a single cell divides into two identical daughter cells.
Q6
Medium
Which of the following statements about autotrophic bacteria in Kingdom Monera is true?
A.
They cannot produce their own food.
B.
They require organic compounds for nutrition.
C.
They can synthesize organic compounds using light energy.
D.
They are always pathogenic.
Show Answer & Explanation
Correct Answer: C
Autotrophic bacteria can synthesize organic compounds through processes like photosynthesis, using light energy, which distinguishes them from heterotrophic bacteria.
Q7
Medium
What is the primary role of nitrogen-fixing bacteria in agriculture?
A.
They decompose organic matter.
B.
They convert nitrogen gas into ammonia.
C.
They enhance soil acidity.
D.
They compete with crops for nutrients.
Show Answer & Explanation
Correct Answer: B
Nitrogen-fixing bacteria convert atmospheric nitrogen gas into ammonia, which is a form that plants can use for growth, thus playing a crucial role in sustainable agriculture.
Q8
Hard
Which of the following is NOT a characteristic of Kingdom Monera?
A.
Unicellular organisms
B.
Prokaryotic cell structure
C.
Membrane-bound organelles
D.
Reproduce asexually
Show Answer & Explanation
Correct Answer: C
Kingdom Monera is characterized by prokaryotic cells, which lack membrane-bound organelles, unlike eukaryotic cells.
Q9
Hard
Which of the following groups of bacteria can perform nitrogen fixation?
A.
Cyanobacteria
B.
Spirochetes
C.
Proteobacteria
D.
Chlamydiae
Show Answer & Explanation
Correct Answer: A
Cyanobacteria are known for their ability to fix atmospheric nitrogen, a crucial process for ecosystems.
Q10
Hard
The primary mode of reproduction in Monera is:
A.
Budding
B.
Binary fission
C.
Fragmentation
D.
Sexual reproduction
Show Answer & Explanation
Correct Answer: B
Monera primarily reproduces asexually through binary fission, where a single cell divides into two identical cells.
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Biological Classification — NEET Biology Practice Questions Online
This page contains 1681 practice MCQs for the chapter Biological Classification in NEET Biology. The questions are organized by difficulty — 336 easy, 744 medium, 601 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 10 topics, giving you comprehensive coverage of the entire chapter.