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Diversity in Living Organisms

Description: Science, Biology, IX, Diversity in Living Organisms
Number of Questions: 35
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Tags: Science IX Classification - Need and Basis Classes of Unicellular Organisms Hierarchy of Classification Characteristics of Fungi
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Who first proposed the idea of evolution?

  1. Aristotle

  2. Darwin

  3. Linnaeus

  4. Hackel

  5. Whittaker


Correct Option: B
Explanation:

Charles Darwin in 1859 proposed the idea of evolution in the book, 'The Origin of Species'.

Which of the following includes all organisms that are similar enough to breed and perpetuate?

  1. Phylum

  2. Class

  3. Order

  4. Family

  5. Species


Correct Option: E
Explanation:

Species is a group of all organisms that are similar enough to breed and perpetuate.

Which of the following is not the basic feature that groups all organisms into a hierarchical classification?

  1. Nature of the cell, i.e. consisting of a clearly demarcated nucleus or not

  2. Unicellular or multi-cellular organism showing division of labour

  3. Habitat of the organism

  4. Whether the organism (plant) is an autotroph or not

  5. Whether the animal has specialised organs for different functions


Correct Option: C
Explanation:

This is not a basic feature that is considered while classifying all organisms into a hierarchical classification. Many organisms may not have any similarities except common habitat. Thus, this is the correct answer choice.

Which of the following organisms do/does not come under Kingdom Monera?

a. Bacteria b. Blue green algae c. Mycoplasm d. Unicellular algae

  1. Only a and b

  2. Only b and c

  3. Only c

  4. Only d

  5. Only b and d


Correct Option: D
Explanation:

This is the correct answer. Unicellular algae have membrane bound nucleus and organelles. They come under Kingdom Protista.

Which of the following is not a characteristic of Kingdom Monera?

  1. The organisms do not have a clearly defined nucleus.

  2. Cell organelles are not covered with a membrane.

  3. These are unicellular organisms.

  4. None of these organisms have a cell wall.

  5. Mode of nutrition can be autotrophic or hetrotrophic.


Correct Option: D
Explanation:

Some organisms in Kingdom Monera have a cell wall and some do not have a cell wall. Thus, this is the correct answer.

Which of the following statements is/are correct?

a. Advanced organisms have acquired their particular body designs relatively recently. b. Primitive organisms have comparatively simpler body design. c. Advanced organisms are the same as complex organisms.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and c

  5. All of these


Correct Option: E
Explanation:

Advanced organisms have acquired their particular body designs relatively recently. Primitive organisms have comparatively simpler body design. Advanced organisms are the same as complex organisms. This is the correct answer, as all statements are correct.

Which of the following is correct about Kingdom Fungi?

a. Fungi are saprophytes or parasites. b. Fungi have membrane bound nucleus. c. Fungi have cell walls made of chitin.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and c

  5. All of these


Correct Option: E
Explanation:

Fungi are saprophytes or parasites. Fungi have membrane bound nucleus. Fungi have cell walls made of chitin. This is the correct answer, as all the statements are correct.

Which of the following is/are not true about Kingdom Protista?

a. Organisms under Kingdom Protista are unicellular eukaryotic organisms. b. Some of the organisms under Kingdom Protista use cilis or whip like flagella for moving around. c. The mode of nutrition for organisms under Kingdom Protista can be heterotrophic or autotrophic.

  1. Only a

  2. Only b

  3. Only c

  4. All of these

  5. None of these


Correct Option: E
Explanation:

This is the correct answer, as all statements are correct about Kingdom Protista.

Which of the following is not an example of Thallophyta?

  1. Ulothrix

  2. Cladophora

  3. Ulva

  4. Marchantia

  5. Spirogyra


Correct Option: D
Explanation:

Marchantia is an example of Bryophyta.

Which of the following divisions of plants has the simplest organisation?

  1. Thalophyta

  2. Bryophyta

  3. Pteridophyta

  4. Gymnosperms

  5. Angiosperms


Correct Option: A
Explanation:

Thalophyta does not have a differentiated body. It has the simplest organisation.

Which of the following is a bryophyta?

  1. Spirogyra

  2. Moss

  3. Lichen

  4. Ulothrix

  5. Fern


Correct Option: B
Explanation:

Moss is a radially symmetrical leafy Bryophyte. 

Which of the following is not true about Bryophytes?

  1. They include higher cryptogamae.

  2. The plant body of bryophytes may be thalloid or leafy.

  3. True roots are absent in bryophytes.

  4. They have specialised conducting tissue called rhizoids.

  5. They have hidden reproductive organs.


Correct Option: D
Explanation:

Rhizoids develop as true roots are absent in Bryophytes. They do not have specialised conducting tissue.

Match the following

Kingdom Type of organisms
a. Monera 1. Lack chlorophyll
b. Protista 2. Multicellular consumers
c. Plantae 3. Bacteria and cynobacteria
d. Fungi 4. Photosynthetic plants
e. Animalia 5. Unicellular organisms
  1. a - 1, b - 2, c - 3, d - 4, e - 5

  2. a - 4, b - 2, c - 3, d - 1, e - 5

  3. a - 5, b - 4, c - 3, d - 2, e - 1

  4. a - 1, b - 4, c - 5, d - 2, e - 3

  5. a - 3, b - 5, c - 4, d - 1, e - 2


Correct Option: E
Explanation:

This is the correct matching. Kingdom Monera - Bacteria and cynobacteria Kingdom Protista - Unicellular organisms Kingdom Plantae - All photosynthetic green plants Kingdom Fungi - Lack chlorophyll and obtain food through absorption Kingdom Animalia - It is a kingdom of multicellular consumers

Which of the following statements is incorrect?

  1. Both plants and animals contain protoplasm.

  2. Both plants and animals show response to stimuli.

  3. Both plants and animals have cell walls.

  4. Both plants and animals pass on hereditary characters to offspring by the same mechanism.

  5. Certain life processes take place in both animals and plants in identical manner.


Correct Option: C
Explanation:

This statement is false, hence this option is correct. Plants have cell walls as outer most covering. Animal cells do not have cell walls.

Which of the following is/are the sub kingdoms of plant kingdom as suggested by Eichler?

a. Cryptogamae b. Phanerogamae c. Moss d. Liverworts

  1. Only a and c

  2. Only a and b

  3. Only b and c

  4. Only b and d

  5. Only c and d


Correct Option: B
Explanation:

Eichler (1883) suggested that the plant kingdom should be divided into two subkingdoms: Subkingdom Cryptogamae Subkingdom Phanerogamae. Thus, this is the correct answer.

Match the Column I with the Column II

Column - I Column - II
A. Unicellular Eukaryotes 1. Protista
B. Eukaryotes with cell wall 2. Fungi
C. Eukaryotes without cell wall 3. Animalia
  1. a - 1, b - 2, c - 3

  2. a - 2, b - 3, c - 1

  3. a - 3, b - 1, c - 2

  4. a - 1, b - 3, c - 2

  5. a - 2, b - 1, c - 3


Correct Option: A
Explanation:

This is the correct matching. Protista are unicellular eukaryotes, fungi and plantae are eukaryotes with cell wall. Animalia are eukaryotes without cell wall.

Which of the following is an example of gymnosperm?

  1. Fern

  2. Pine

  3. Moss

  4. Lichen

  5. Algae


Correct Option: B
Explanation:

This is the correct answer. The plants of the group gymnosperm bear naked seeds and are usually perennial, evergreen and woody. Examples are pine and deodar.

Which of the following is incorrect about Alga?

  1. Green in colour.

  2. Filamentous or single celled.

  3. Presence of xylem vessels.

  4. Food stored as starch.

  5. Alga is Aquatic.


Correct Option: C
Explanation:

This statement is wrong, hence this option is the correct answer. Alga does not have xylem vessels. 

Which of the following are called the amphibians of the plant kingdom?

  1. Bryophytes

  2. Pteridophytes

  3. Phanerograms

  4. Angiosperms

  5. Gymnosperms


Correct Option: A
Explanation:

Bryophytes are called as the amphibians of the plant kingdom because they live in damp areas. Their bodies are devoid of vascular tissues, roots, cuticle, etc. Therefore, they live in moist habitats in order to obtain water directly or through rhizoids and prevent desiccation.

Which of the following statements is/are true?

a. Gymnosperms produce cones formed of sporophylls. b. Angiosperms produce flowers, which carry male and female gametes. c. Rhizoids are present in gymnosperms.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

  5. All of these


Correct Option: D
Explanation:

This is the correct answer, as both statements are true.

Which of the following statements is/are true?

a. Members of the animal kingdom have no cell walls. b. They are heterotrophic. c. Animals are classified based on the extent and the type of body design differentiation found.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

  5. All of these


Correct Option: E
Explanation:

This is the correct answer, as all the statements are true.

Which of the following is incorrect about the animals of the Phylum Nematoda?

a. Body cavity in Nematoda is not a true coelom. b. Body of Nematoda is bilaterally symmetrical and triploblastic. c. Nematoda are hermaphrodites.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

  5. Only b and c


Correct Option: C
Explanation:

This is the correct answer. Sexes are separate in Nematodes.

Which of the following statements is/are correct?

a. Some groups of organisms, which have ancient body designs have not changed very much. b. Complexity in design of an organism increases over evolutionary time. c. Most life forms that we see today have arisen by an accumulation of changes in body design that allow the organism possessing them to survive better.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and c

  5. All of these


Correct Option: E
Explanation:

This is the correct answer, as all statements are correct.

Which of the following statements about Arthropods is incorrect?

  1. They have chitinous exoskeleton.

  2. The body is segmented and is divisible into two or three regions.

  3. Body cavity is reduced in Arthropods.

  4. They have kidney like organs for excretion.

  5. There is an open circulatory system.


Correct Option: D
Explanation:

No, this statement is incorrect. They do not have kidney type organs for excretion.

Which of the following is correct about the Phylum Porifera of the animalia kingdom?

  1. Porifera have pores called ostia over the body.

  2. The body of porifera is radially symmetrical.

  3. The body of Porifera bears tentacles supplied with special stinging cells.

  4. Reproduction in Porifera is only asexual by budding and gemules.

  5. Most Porifera are small cylindrical or round worms.


Correct Option: A
Explanation:

This is the correct answer.  Porifera have pores called ostia over the body with a single large opening called osculum on top. Animals of these phylum are known as sponges.

Flatworms belong to the Phylum

  1. Coelenterata

  2. Platyhelminthes

  3. Annelida

  4. Arthropoda

  5. Vertebrata


Correct Option: B
Explanation:

Flatworms belong to the Phylum Platyhelminthes. This is the correct answer.

Which of the following is not a class of the Phylum Vertebrata?

  1. Pisces

  2. Amphibia

  3. Reptilia

  4. Mammalia

  5. Protochortada


Correct Option: E
Explanation:

Protochordates are marine animals. They are a Phylum not a class of the Phylum of Vertebrata.

The body cavity that is not lined by mesodermal layers and the space is filled by large vacuolated cells is called

  1. true coelom

  2. pseudocoelom

  3. ctenidia

  4. haemocoel

  5. cnidoblasts


Correct Option: B
Explanation:

The body cavity that is not lined by mesodermal layers and the space is filled by large vacuolated cells is called pseudocoelom.

Which of the following statements is incorrect about amphibians?

a. Amphibians have mucus glands in the skin. b. They have a four chambered heart. c. Respiration is through either gills or lungs.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

  5. All of these


Correct Option: B
Explanation:

No, the amphibians have three chambered heart.

Who proposed binomial nomenclature?

  1. Carolus Linnaeus

  2. Charles Darwin

  3. E.H. Hackel

  4. Robert Whittaker

  5. Eichler


Correct Option: A
Explanation:

Linnaeus gave a system in which an organism is given two names. The first part is the generic name and the second part is the specific name.

Which of the following is not the convention followed while writing the scientific names in binomial nomenclature?

  1. The specific name comes first and then the generic name is given.

  2. The name of the genus begins with a capital letter.

  3. The name of the species begins with a small letter.

  4. When printed, the scientific name is given in italics.

  5. When written by hand, the genus name and the species name have to be underlined separately.


Correct Option: A
Explanation:

This is incorrect. The binomial nomenclature states that the generic name comes first and then the specific name follows.

Which of the following is/are the features that all the chordates posses?

a. Vertebrates have bilaterally symmetrical body. b. They have a true vertebral column. c. They have dorsal nerve chord. d. They have chitinious exoskeleton.

  1. Only a, b and d

  2. Only a, b and c

  3. Only b, c and d

  4. Only a, c and d

  5. All of these


Correct Option: B
Explanation:

This is the correct answer, as all  are correct statements about chordates. These animals have a true vertebral column and internal skeleton, allowing a completely different distribution of muscle attachment points to be used for movement. Vertebrates are bilaterally symmetrical, triploblastic, coelomic and segmented with complex differentiation of body tissues and organs.

Match the following animals with their Phylum:

Animal Phylum
a. Honey bee 1. Mollusca
b. Snail 2. Echinodermata
c. Star fish 3. Arthropoda
d. Earthworm 4. Annelida
  1. a - 1, b - 2, c - 4, d - 3

  2. a - 2, b - 3, c - 4, d - 1

  3. a - 3, b - 1, c - 2, d - 4

  4. a - 4, b - 2, c - 3, d - 1

  5. a - 4, b - 3, c - 2, d - 1


Correct Option: C
Explanation:

This is the correct matching. Honey bee belongs to the Phylum Arthropoda, Snail belongs to Phylum Mollusca, Star fish belongs to Phylum Echinodermata, and Earthworm belongs to Phylum Annelida.

Which of the following statements is incorrect?

  1. Pisces are aquatic, have gills and have a two chambered heart.

  2. Amphibia are cold blooded with three chambered heart and their eggs are without coverings.

  3. Reptilia have a three chambered heart and eggs have hard covering.

  4. Aves are cold blooded, have a three chambered heart and have modified forelimbs.

  5. Mammalia are warm blooded, have a four chambered heart and have mammary glands.


Correct Option: D
Explanation:

This  is the correct answer, as this statement is incorrect. Aves have modified forelimbs for flight but they have a four chambered heart and are warm blooded.

Which of the following statements is incorrect about class Reptilia of Phylum Vertebrata?

  1. Body is covered in scales.

  2. Heart is mostly three chambered.

  3. Respiration is by lungs only.

  4. They lay eggs in water.

  5. Eggs have hard and tough coverings.


Correct Option: D
Explanation:

This is incorrect, hence the correct option. They do not need water to lay eggs.

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