CBSE Class 9 Biology Diversity in Living Organisms MCQs Set 03

Download CBSE MCQs for Class 9 Biology: Diversity in Living Organisms

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Chapter-wise Objective Questions: Diversity in Living Organisms

Access the complete set of multiple-choice questions for Diversity in Living Organisms below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official CBSE textbooks.

Multiple Choice Questions

Question 1: Which group of plants has both animal-like and plant-like features, being a link between the two kingdoms?
(a) Blue-green algae
(b) Euglena
(c) Moss
(d) Cycas
Show Answer & Explanation

Answer: (b) Euglena

Explanation:
1. Euglena has chlorophyll like plants and is motile and can feed like animals.
2. Hence it is a link between the two kingdoms.

Teacher's Note:
1. Euglena is a protist.

Question 2: Vascular bundles are found in
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Lichens
Show Answer & Explanation

Answer: (c) Pteridophyta

Explanation:
1. Pteridophytes have xylem and phloem.
2. Thallophytes, bryophytes and lichens lack true vascular tissue.

Teacher's Note:
1. Pteridophytes are the first vascular plants.

Question 3: Warm-blooded animals are
(a) Reptilia
(b) Fish
(c) Aves
(d) Amphibia
Show Answer & Explanation

Answer: (c) Aves

Explanation:
1. Birds and mammals maintain a constant body temperature.
2. Reptiles, fish and amphibians are cold-blooded.

Teacher's Note:
1. Only Aves and Mammalia are warm-blooded.

Question 4: Which of the following are used for respiration in arthropods?
1. Body surface
2. Book-lungs
3. Gills
4. Lungs
(a) 1, 2 and 3
(b) 1 and 2 only
(c) 2 and 4
(d) 3 and 4 only
Show Answer & Explanation

Answer: (a) 1, 2 and 3

Explanation:
1. Arthropods respire through the body surface, gills, tracheae or book-lungs.
2. They do not have true lungs.

Teacher's Note:
1. Match the respiratory organ to the habitat.

Question 5: Whittaker failed to give a place in his classification to
(a) Cyanobacteria
(b) Virus
(c) Slime moulds
(d) All of the above
Show Answer & Explanation

Answer: (b) Virus

Explanation:
1. Cyanobacteria were placed in Monera and slime moulds in Protista.
2. Viruses are not cellular, so they found no place in the five kingdoms.

Teacher's Note:
1. Viruses lie between living and non-living.

Question 6: The true coelom is lined with
(a) Ectoderm
(b) Endoderm
(c) Mesoderm
(d) Ectoderm and endoderm
Show Answer & Explanation

Answer: (c) Mesoderm

Explanation:
1. A true coelom is a cavity lined by mesoderm.
2. It forms in the eucoelomate animals.

Teacher's Note:
1. Pseudocoelom is not fully lined by mesoderm.

Question 7: The study of lizards is called
(a) Herpetology
(b) Saurology
(c) Ophiology
(d) Serology
Show Answer & Explanation

Answer: (b) Saurology

Explanation:
1. Saurology is the study of lizards.
2. Herpetology covers reptiles and amphibians, ophiology is the study of snakes and serology of blood serum.

Teacher's Note:
1. The Greek word sauros means lizard.

Question 8: A four-chambered heart is present in
(a) Mammals
(b) Fishes
(c) Reptiles
(d) Amphibians
Show Answer & Explanation

Answer: (a) Mammals

Explanation:
1. Mammals have two atria and two ventricles.
2. Fishes have two chambers, amphibians three and most reptiles three and a half.

Teacher's Note:
1. Birds and mammals have four chambers.

Question 9: Which among the following have specialised tissue for conduction of water?
(i) Thallophyta (ii) Bryophyta (iii) Pteridophyta (iv) Gymnosperms
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)
Show Answer & Explanation

Answer: (c) (iii) and (iv)

Explanation:
1. Pteridophytes and gymnosperms have xylem for conducting water.
2. Thallophytes and bryophytes have no true vascular tissue.

Teacher's Note:
1. Vascular plants are pteridophytes, gymnosperms and angiosperms.

Question 10: Who is known as the father of taxonomy?
(a) Linnaeus
(b) Darwin
(c) Mendel
(d) Watson
Show Answer & Explanation

Answer: (a) Linnaeus

Explanation:
1. Carolus Linnaeus laid the foundation of modern classification and binomial nomenclature.
2. He is called the father of taxonomy.

Teacher's Note:
1. Linnaeus also wrote Systema Naturae.

Question 11: The study of molluscs is called
(a) Malacology
(b) Conchology
(c) Mycology
(d) Phycology
Show Answer & Explanation

Answer: (a) Malacology

Explanation:
1. Malacology is the study of molluscs.
2. Conchology is the study of shells, mycology of fungi and phycology of algae.

Teacher's Note:
1. Mollusca come from malakos meaning soft.

Question 12: Chlamydomonas is an example of
(a) Algae
(b) Fungi
(c) Lichens
(d) None
Show Answer & Explanation

Answer: (a) Algae

Explanation:
1. Chlamydomonas is a unicellular green alga found in fresh water.
2. It is photosynthetic and has a cup-shaped chloroplast.

Teacher's Note:
1. It is a standard example of a unicellular alga.

Question 13: Haemocoel is found in
(a) Arthropods
(b) Molluscs
(c) Both of these
(d) None of these
Show Answer & Explanation

Answer: (c) Both of these

Explanation:
1. Arthropods and molluscs have an open circulatory system.
2. Blood fills a cavity called the haemocoel.

Teacher's Note:
1. Open circulation means haemocoel.

Question 14: Which of the following does not belong to the phylum Coelenterata?
(a) Hydra
(b) Aurelia
(c) Metridium
(d) Euplectella
Show Answer & Explanation

Answer: (d) Euplectella

Explanation:
1. Hydra, Aurelia (jellyfish) and Metridium (sea anemone) are cnidarians.
2. Euplectella (Venus flower basket) is a sponge, phylum Porifera.

Teacher's Note:
1. Sponges lack stinging cells.

Question 15: Which group of plants is called the amphibians of the plant kingdom?
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Gymnosperm
Show Answer & Explanation

Answer: (b) Bryophyta

Explanation:
1. Bryophytes live on land but need water for fertilisation.
2. This dependence on water gives them the name amphibians of the plant kingdom.

Teacher's Note:
1. Compare with animal amphibians that live on land but breed in water.
2. Mosses and liverworts are bryophytes.

Question 16: Match Column I with Column II.
Column I: 1. Limbless reptile, 2. Jawless vertebrate, 3. Amphibian, 4. Cartilaginous fish, 5. Flightless bird
Column II: a. Lamprey, b. Salamander, c. Salmon, d. Snake, e. Shark, f. Ostrich
(a) 1-d, 2-a, 3-b, 4-e, 5-f
(b) 1-d, 2-c, 3-b, 4-e, 5-f
(c) 1-a, 2-d, 3-b, 4-e, 5-f
(d) 1-d, 2-a, 3-e, 4-b, 5-f
Show Answer & Explanation

Answer: (a) 1-d, 2-a, 3-b, 4-e, 5-f

Explanation:
1. A snake is a limbless reptile.
2. A lamprey is a jawless vertebrate.
3. A salamander is an amphibian.
4. A shark has a cartilaginous skeleton.
5. An ostrich is a flightless bird.

Teacher's Note:
1. Salmon is a bony fish and is not matched.

Question 17: Binomial nomenclature was introduced by
(a) John Ray
(b) A. P. de Candolle
(c) A. L. de Jussieu
(d) Carolus Linnaeus
Show Answer & Explanation

Answer: (d) Carolus Linnaeus

Explanation:
1. Linnaeus proposed giving each organism two names, the genus name and the species name.

Teacher's Note:
1. Example: Rana tigrina.

Question 18: Green glands present in some arthropods help in
(a) Respiration
(b) Digestion
(c) Excretion
(d) None of these
Show Answer & Explanation

Answer: (c) Excretion

Explanation:
1. Green glands are the excretory organs of crustaceans such as prawns.

Teacher's Note:
1. They are comparable with kidneys.

Question 19: Which of the following organisms lacks chlorophyll?
(a) Rhizopus
(b) Cycas
(c) Spirogyra
(d) Wheat
Show Answer & Explanation

Answer: (a) Rhizopus

Explanation:
1. Rhizopus is a fungus (bread mould) and cannot photosynthesise.
2. Cycas, Spirogyra and wheat contain chlorophyll.

Teacher's Note:
1. Fungi are heterotrophs.

Question 20: In the five kingdom classification of Whittaker, members of Kingdom Animalia are heterotrophic, eukaryotic and
(a) multicellular
(b) unicellular only
(c) either unicellular or multicellular
(d) none of these
Show Answer & Explanation

Answer: (a) multicellular

Explanation:
1. Animals have eukaryotic cells without cell walls and feed on other organisms.
2. They are all multicellular, unlike Protista.

Teacher's Note:
1. Unicellular eukaryotes are placed in Protista.

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Diversity in Living Organisms Objective Questions & Solutions for Class 9 Biology

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