Students can practice the best Class 9 Science MCQ and Class 9 Science Exploration Chapter 12 MCQ Online Test with Answers Patterns in Life Diversity and Classification for exam preparation.
Class 9 Science Chapter 12 Patterns in Life Diversity and Classification MCQ
Patterns in Life Diversity and Classification MCQ
Class 9 Science Chapter 12 MCQ online test
Question 1.
Who proposed the Five Kingdom Classification system?
(A) Carolus Linnaeus
(B) RH Whittaker
(C) Charles Darwin
(D) Ernst Haeckel
Answer:
(B) RH Whittaker
Question 2.
Which of the following is an endemic species found only in India?
(A) Snow leopard
(B) Nilgiri tahr
(C) Bengal tiger
(D) Asian elephant
Answer:
(B) Nilgiri tahr
Question 3.
Who is known as the ‘Father of Taxonomy’?
(A) RH Whittaker
(B) Charles Darwin
(C) Carolus Linnaeus
(D) Gregor Mendel
Answer:
(C) Carolus Linnaeus
Question 4.
The correct taxonomic hierarchy from broadest to most specific is
(A) Kingdom → Class → Phylum → Order → Family → Genus Species
(B) Kingdom → Phylum → Class → Order Family → Genus → Species
(C) Kingdom → Phylum → Order → Class → Family → Genus → Species
(D) Species → Genus → Family → Order → Class → Phylum → Kingdom
Answer:
(B) Kingdom → Phylum → Class → Order Family → Genus → Species
Question 5.
Why was a third kingdom Protista added to the two kingdom classification?
(A) To include all multicellular organisms
(B) To include unicellular microscopic organisms like Amoeba and Paramecium
(C) To include fungi and bacteria
(D) To include all aquatic organisms
Answer:
(B) To include unicellular microscopic organisms like Amoeba and Paramecium
Question 6.
Plasmodium, the causative agent of malaria, belongs to kingdom
(A) Monera
(B) Protista
(C) Fungi
(D) Animalia
Answer:
(B) Protista
Question 7.
The cell wall of fungi is composed of
(A) cellulose
(B) peptidoglycan
(C) chitin
(D) lignin
Answer:
(C) chitin
Question 8.
Which protist uses pseudopodia for movement?
(A) Fuglena
(B) Paramecium
(C) Amoeba
(D) Diatoms
Answer:
(C) Amoeba
Question 9.
A lichen is a symbiotic association between
(A) fungus and a bacterium
(B) fungus and an alga
(C) alga and a plant root
(D) bacterium and an alga
Answer:
(B) fungus and an alga
Question 10.
Regions that support a large number of endemic species and have undergone significant habitat loss are called
(A) National parks
(B) Wildlife sanctuaries
(C) Biodiversity hotspots
(D) Biosphere reserves
Answer:
(C) Biodiversity hotspots
Biodiversity hotspots are regions that are particularly rich in endemic species but have also undergone significant habitat loss. Western Ghats and the Himalayas are examples.
Question 11.
Bryophytes are called ‘amphibians of the plant kingdom’ because
(A) they can move in water and on land
(B) they survive on land but require water for reproduction
(C) they have both xylem and phloem
(D) they are found only near rivers
Answer:
(B) they survive on land but require water for reproduction
Question 12.
Which plant group was the first to possess true vascular tissue?
(A) Thallophyta
(B) Bryophyta
(C) Pteridophyta
(D) Gymnosperms
Answer:
(C) Pteridophyta
Question 13.
Seeds of gymnosperms are called ‘naked’ because
(A) they have no seed coat
(B) they are not enclosed within a fruit
(C) they lack an embryo
(D) they have no endosperm
Answer:
(B) they are not enclosed within a fruit
Question 14.
Monocotyledonous plants are characterised by
(A) reticulate venation and two cotyledons
(B) parallel venation and one cotyledon
(C) parallel venation and two cotyledons
(D) reticulate venation and one cotyledon
Answer:
(B) parallel venation and one cotyledon
Question 15.
Which of the following is a correct example-group match for plants?
(A) Spirogyra – Bryophyta
(B) Funaria – Pteridophyta
(C) Marsilea – Pteridophyta
(D) Cycas – Angiosperms
Answer:
(C) Marsilea – Pteridophyta
Question 16.
Cnidoblasts (stinging cells) are characteristic of phylum.
(A) Platyhelminthes
(B) Nematoda
(C) Coelenterata
(D) Echinodermata
Answer:
(C) Coelenterata
Question 17.
The largest phylum in the animal kingdom, comprising over 80% of all known animal species, is
(A) Mollusca
(B) Chordata
(C) Arthropoda
(D) Annelida
Answer:
(C) Arthropoda
Question 18.
Nematodes possess a pseudocoelom, meaning the body cavity is
(A) completely lined by mesodermal tissue
(B) absent entirely
(C) not fully lined by mesodermal tissue
(D) lined by ectodermal tissue
Answer:
(C) not fully lined by mesodermal tissue
Question 19.
The water vascular system used for locomotion and feeding is unique to
(A) Mollusca
(B) Arthropoda
(C) Echinodermata
(D) Annelida
Answer:
(C) Echinodermata
Question 20.
Which of the following is an example of phylum – Platyhelminthes?
(A) Ascaris
(B) Nereis
(C) Planaria
(D) Hydra
Answer:
(C) Planaria
Question 21.
All chordates share which three features at some stage of life?
(A) Notochord, dorsal hollow nerve cord, pharyngeal gill slits
(B) Backbone, dorsal nerve cord, scales
(C) Notochord, ventral nerve cord, gill slits
(D) Vertebral column, dorsal nerve cord, gill slits
Answer:
(A) Notochord, dorsal hollow nerve cord, pharyngeal gill slits
Question 22.
Which vertebrate class is warm-blooded, has hollow bones and lays hard-shelled eggs?
(A) Reptilia
(B) Mammalia
(C) Aves
(D) Amphibia
Answer:
(C) Aves
Question 23.
Reptiles differ from Amphibia in that reptiles
(A) are warm-blooded
(B) have a four-chambered heart
(C) have dry, scaly skin and do not need water for reproduction
(D) breathe through gills
Answer:
(C) have dry, scaly skin and do not need water for reproduction
Question 24.
Binomial nomenclature was introduced by Linnaeus in his work
(A) On the Origin of Species
(B) Systema Naturae
(C) Historia Plantarum
(D) Genera Plantarum
Answer:
(B) Systema Naturae
Question 25.
Which of the following scientific names is written correctly?
(A) homo Sapiens
(B) Homo Sapiens
(C) Homo sapiens
(D) homo sapiens
Answer:
(C) Homo sapiens
Question 26.
The scientific name of the mango tree is
(A) Pisum sativum
(B) Feliscatus
(C) Mangifera indica
(D) Panthera tigris
Answer:
(C) Mangifera indica
Question 27.
Why are scientific names written in Latin or a latinised form?
(A) Latin is the oldest language in the world
(B) To ensure universal acceptance regardless of native language
(C) Latin names are shorter and easier to pronounce
(D) To honour Roman scientists who first classified organisms
Answer:
(B) To ensure universal acceptance regardless of native language
Question 28.
Which of the following is not a characteristic of viruses?
(A) Presence of genetic material (DNA or RNA)
(B) Enclosed in a protein coat called a capsid
(C) Ability to reproduce independently
(D) Acellular structure
Answer:
(C) Ability to reproduce independently
Question 29.
In which cycle does viral DNA remain integrated and inactive in the host before becoming active?
(A) Lytic cycle
(B) Lysogenic cycle
(C) Aerobic cycle
(D) Parasitic cycle
Answer:
(B) Lysogenic cycle
Question 30.
Viruses are described as entities at the boundary between living and non-living because
(A) they have a cell wall but no nucleus
(B) they become active only inside a host and cannot metabolise independently
(C) they can survive extreme temperatures
(D) they reproduce by binary fission like bacteria
Answer:
(B) they become active only inside a host and cannot metabolise independently
Question 31.
Which of the following is the correct sequence of taxonomic hierarchy from broadest to most specific?
(A) Kingdom → Class → Phylum → Order → Family → Genus → Species
(B) Kingdom → Phylum → Order → Class → Family → Genus → Species
(C) Kingdom → Phylum → Class → Order → Family → Genus → Species
(D) Species → Genus → Family Order → Class → Phylum → Kingdom
Answer:
(C) Kingdom → Phylum → Class → Order → Family → Genus → Species
Question 32.
Which of the following is a correct combination of kingdom and its cell wall composition?
(A) Fungi – Cellulose
(B) Plantae – Chitin
(C) Monera – Peptidoglycan
(D) Animalia – Chitin
Answer:
(C) Monera – Peptidoglycan
Question 33.
Which of the following statements about the Five Kingdom Classification are correct?
i. It was proposed by RH Whittaker in 1969.
ii. Monera includes both prokaryotic and eukaryotic organisms.
iii. Fungi are heterotrophic and reproduce by spores.
iv. Protista serves as an evolutionary link between prokaryotes and complex eukaryotes.
v. All organisms in Kingdom-Animalia have a cell wall.
(A) i, ii, iii
(B) i, iii, iv
(C) ii, iii, v
(D) i, ii, v
Answer:
(B) i, iii, iv
Question 34.
Choose the correct set of features that all members of Kingdom-Fungi possess.
(A) Autotrophic, chitin cell wall, reproduce by spores
(B) Heterotrophic, chitin cell wall, reproduce by spores
(C) Heterotrophic, cellulose cell wall, reproduce by seeds
(D) Autotrophic, no cell wall, reproduce by spores
Answer:
(B) Heterotrophic, chitin cell wall, reproduce by spores
Question 35
Which of the following is correctly matched?
(A) Spirogyra – Bryophyta
(B) Marsilea -Pteridophyta
(C) Funaria -Thallophyta
(D) Cycas -Angiosperms
Answer:
(B) Marsilea -Pteridophyta
Patterns in Life Diversity and Classification Class 9 Assertion and Reason Questions
Direction (Question Nos. 1 – 10): The following questions consist of two statements-Asssertion (A) and Reason (R). Answer the questions by selecting the appropriate option given below.
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
Question 1.
Assertion (A): Bryophytes are called the amphibians of the plant kingdom.
Reason (R): Bryophytes can survive on land but depend on water for fertilisation
Answer:
(A) Both A and R are true and R is the correct explanation of A.
Question 2.
Assertion (A): Fungi cannot perform photosynthesis.
Reason (R): Fungi lack chlorophyll and are therefore entirely heterotrophic.
Answer:
(A) Both A and R are true and R is the correct explanation of A.
Question 3.
Assertion (A): Viruses are considered partially living organisms
Reason (R): Viruses can replicate and carry out metabolic activities independently.
Answer:
(C) A is true, but R is false
R can be corrected as Viruses cannot replicate or carry out metabolism independently and depend on a host organism.
Question 4.
Assertion (A): Arthropoda is the largest phylum in the animal kingdom.
Reason (R): Arthropods have jointed appendages, a chitin exoskeleton, and an open circulatory system, which have allowed them to adapt to almost every habitat on Earth.
Answer:
(B) Both A and R are true, but R is not the correct explanation of A.
Question 5.
Assertion (A): Gymnosperms are more evolved than angiosperms.
Reason (R): In gymnosperms, seeds are not enclosed within a fruit, whereas in angiosperms seeds are enclosed within a fruit.
Answer:
(D) A is false, but R is true.
A can be corrected as Gymnosperms are less evolved than angiosperms.
Question 6.
Assertion (A): Bryophytes are called the amphibians of the plant kingdom.
Reason (R): Bryophytes can survive on land but require water for fertilisation and reproduction.
Answer:
(A) Both A and R are true and R is the correct explanation of A.
Question 7.
Assertion (A): Fungi are classified separately from plants in the Five Kingdom system.
Reason (R): Fungi are heterotrophic, have chitin cell walls and lack chlorophyll, unlike plants which are autotrophic with cellulose cell walls.
Answer:
(A) Both A and R are true and R is the correct explanation of A.
Question 8.
Assertion (A): Viruses are classified under Kingdom-Monera.
Reason (R): Viruses are acellular entities that cannot carry out metabolic activities independently and do not fit into any of the five kingdoms.
Answer:
(D) A is false, but R is true.
A can be corrected as Viruses are not classifed field under the flue kingdom classification.
Question 9.
Assertion (A): Arthropoda is the largest phylum in the animal kingdom.
Reason (R): Arthropods have jointed appendages and a chitin exoskeleton, which have allowed them to adapt to almost every habitat on Earth.
Answer:
(B) Both A and R are true, but R is not the correct explanation of A.
Question 10.
Assertion (A): The scientific name of the mango tree is Mangifera indica.
Reason (R): In binomial nomenclature, the genus name begins with a capital letter and the species name begins with a lowercase letter.
Answer:
(A) Both A and R are true and R is the correct explanation of A.