Systematics of Living Organisms MCQ with Answers for Class 11
Maharashtra State Board Class 11 Biology Chapter 2 Systematics of Living Organisms MCQ for Class 11 is essential and crucial that help the students understand the hard topics and help them in the preparation for the Class 11 board examination as well as various competitive entrance examinations also like MHT CET.
Studying these Systematics of Living Organisms MCQ with answers to the questions in the Biology textbook will check your understanding of a particular topic and help you determine your strengths and weaknesses.
Systematics of Living Organisms MCQ PDF
1. Which of the following shows single-stranded RNA and lacks a protein coat?
a. Bacteriophage
b. Plant virus
c. Viroid
d. Animal virus
Answer: C
Read: Living World MCQ
2. The causative agent of red tide is _____________.
a. Dinoflagellate
b. Euglenoid
c. Chrysophyte
d. Lichen
Answer: A
3. Select the odd one out for Heterotrophic bacteria.
a. Nitrogen fixing bacteria
b. Lactobacilli
c. Methanogens
d. Cyanobacteria
Answer: (c) Methanogens or (d) Cyanobacteria
4. Paramoecium: Ciliated Protist:: :: Plasmodium: ____________
a. Amoeboid protozoan
b. Ciliophora
c. Flagellate protozoan
d. Sporozoan
Answer: D
5. How is the living world classified?
a) Based on size and shape
b) Based on habitat and behavior
c) Based on evolutionary relationships and similarities
d) Based on color and texture
Answer: c) Based on evolutionary relationships and similarities
Explanation: The classification of living organisms is primarily based on their evolutionary relationships, genetic similarities, and shared characteristics.
6. How are living organisms classified?
a) By their size and weight
b) By their ability to produce offspring
c) By their ecological roles in ecosystems
d) By their structural and functional similarities
Answer: d) By their structural and functional similarities
Explanation: Living organisms are classified based on similarities in their anatomy, physiology, and genetic makeup.
7. Who was the first person to classify the living world?
a) Charles Darwin
b) Carl Linnaeus
c) Aristotle
d) Gregor Mendel
Answer: c) Aristotle
Explanation: Aristotle was one of the earliest naturalists who classified living organisms into groups based on their characteristics.
8. Who is the father of taxonomy?
a) Charles Darwin
b) Carl Linnaeus
c) Gregor Mendel
d) Louis Pasteur
Answer: b) Carl Linnaeus
Explanation: Carl Linnaeus is considered the father of taxonomy for his development of the modern system of naming and classifying organisms using binomial nomenclature.
9. Who is the father of modern classification?
a) Charles Darwin
b) Gregor Mendel
c) Aristotle
d) Carl Linnaeus
Answer: d) Carl Linnaeus
Explanation: Carl Linnaeus is also known as the father of modern classification for his contributions to taxonomy, including the development of a hierarchical system of classification and the use of binomial nomenclature to name species.
10. ICBN stands for _______
a) International Classification of Biological Nomenclature
b) International Code of Botanical Nomenclature
c) Integrated Classification of Biological Nomenclature
d) Indian Council of Biological Nomenclature
Answer: b) International Code of Botanical Nomenclature
Explanation: ICBN stands for the International Code of Botanical Nomenclature, which governs the scientific naming of plants.
12. T.O. Diener discovered _______.
a) Ribosomes
b) Viroids
c) Mitochondria
d) Endoplasmic reticulum
Answer: b) Viroids
Explanation: T.O. Diener discovered viroids, which are small infectious agents consisting of a short strand of circular RNA.
13. What is a taxon?
a) A type of fossil
b) A category used in biological classification
c) A virus
d) A type of plant cell
Answer: b) A category used in biological classification
Explanation: A taxon (plural: taxa) is a group of organisms classified together based on shared characteristics.
14. The smallest taxon of classification is _______
a) Domain
b) Kingdom
c) Species
d) Phylum
Answer: c) Species
Explanation: Species is the smallest and most basic taxonomic unit in biological classification, representing a group of organisms that can interbreed and produce fertile offspring.
15. What is the main basis of classification in the five-kingdom system?
a) Cellular structure
b) Mode of nutrition
c) Genetic makeup
d) Evolutionary relationships
Answer: b) Mode of nutrition
Explanation: The main basis of classification in the five-kingdom system (proposed by R.H. Whittaker) is the mode of nutrition, dividing organisms into kingdoms based on how they obtain nutrients.
16. Bacteriophages normally have …………………………
a) DNA
b) RNA
c) Both DNA and RNA
d) Lipids
Answer: a) DNA
Explanation: Bacteriophages (viruses that infect bacteria) typically have DNA as their genetic material.
17. ………………….. is an example of imperfect fungi.
a) Penicillium
b) Agaricus
c) Aspergillus
d) Candida
Answer: d) Candida
Explanation: Candida is an example of imperfect fungi, characterized by incomplete sexual reproduction and genetic variability.
18. The organisms belongs to …………………………. do not have a well-defined nucleus.
a) Kingdom Protista
b) Kingdom Plantae
c) Kingdom Fungi
d) Kingdom Monera
Answer: d) Kingdom Monera
Explanation: Organisms in Kingdom Monera, such as bacteria and cyanobacteria, lack a well-defined nucleus and other membrane-bound organelles.
19. In Kingdom Monera, cell wall is made up of ……………………….
a) Cellulose
b) Chitin
c) Peptidoglycan
d) Starch
Answer: c) Peptidoglycan
Explanation: The cell wall of bacteria (Kingdom Monera) is primarily composed of peptidoglycan, a unique polysaccharide structure.
20. Small, circular molecules of DNA as an extra-chromosomal genetic element are called………………
a) Plasmids
b) Ribosomes
c) Mitochondria
d) Nucleosomes
Answer: a) Plasmids
Explanation: Plasmids are small, circular DNA molecules found in bacteria and some other organisms, capable of replicating independently and often carrying accessory genes.