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Diversity of the Living World

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Which of the following characteristics is/are exhibited by living organisms?

  1. Reproduction

  2. Growth

  3. Ability to sense environment

  4. Ability to mount a suitable response

  5. All of the above


Correct Option: D
Explanation:

This is the correct option as all of the above are the characteristics that are exhibited by living organisms. This is the correct option as all of the above are the characteristics that are exhibited by living organisms.

The system of providing a name with two components is called binomial nomenclature. Which of the following components do(es) not belong to this system?

a. Generic name b. Botanical code c. Specific epithet

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: C
Explanation:

This is the correct option. Botanical code is not a component of binomial nomenclature.

Which of the following statements is/are false?

a. In plants, the growth by cell division occurs continuously throughout their life span. b. In animals, cell division occurs in certain tissues to replace lost cells. c. A multicellular organism grows by cell division, but a unicellular organism does not grow by cell division.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: D
Explanation:

This is the correct option as this statement is false. Both multicellular organisms and unicellular organisms grow by cell division.

Which of the following scientists gave the naming system called binomial nomenclature that is being practised by biologists all over the world?

  1. Carolus Linnaeus

  2. Ernst Mayr

  3. Charles Darwin

  4. Isaac Newton

  5. Albert Einstein


Correct Option: A
Explanation:

This is the correct option. Carolus Linnaeus gave the naming system called binomial nomenclature that is being practised by biologists all over the world.

Which of the following processes is/are basic to taxonomy?

  1. Characterisation

  2. Identification

  3. Classification

  4. Nomenclature

  5. All of the above


Correct Option: E
Explanation:

This is the correct option as characterisation, identification, classification and nomenclature are the processes that are basic to taxonomy.

Which of the following is the correct hierarchial arrangement of taxonomic categories in descending order?

  1. Kingdom - Phylum - Class - Family - Order

  2. Kingdom - Phylum - Class - Order - Family

  3. Kingdom - Class - Phylum - Order - Family

  4. Family - Phylum - Class - Order - Kingdom

  5. Kingdom - Order - Class - Phylum - Family


Correct Option: B
Explanation:

This is the correct hierarchical arrangement of taxonomic categories in descending order.

Match the following:

 
Name of organisms Mode of reproduction
a. Fungi 1. Regeneration
b. Yeasts 2. Spore formation
c. Planaria 3. Budding
  1. a - 1, b - 3, c - 2

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

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

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

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


Correct Option: E
Explanation:

This is the correct option. Fungi reproduce by the method of spore formation. Fungi multiply and spread easily due to the millions of asexual spores they produce. In lower organisms like yeast, the mode of reproduction is budding. In planaria, the mode of reproduction is regeneration. A fragmented organism regenerates the lost part of its body and becomes a new organism.

Which of the following statements regarding the universal rules of nomenclature is/are false?

a. Biological names are generally in Latin and written in italics. b. Both the words in a biological name, when handwritten, are separately underlined or printed in italics to indicate their Latin origin. c. The first word in a biological name represents the specific epithet, while the second component denotes the genus.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: E
Explanation:

This is the correct option as this statement is false regarding the universal rules of nomenclature.The first word in a biological name represents the genus, while the second component denotes the specific epithet.

Genus comprises a group of related species, which have more characters in common in comparison to species of other genera. Which of the following species do(es) not belong to the genus Panthera?

a. Leopard b. Cat c. Tiger

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: C
Explanation:

This is the correct option as cats do not belong to the genus Panthera. Another genus Felis includes cats.

Which of the following statements is/are false?

a. Potato and brinjal are two different species, but both belong to the genus Solanum. b. Families are characterised on the reproductive features of plant species. c. Human beings belong to the species sapiens, which is grouped in the genus Homo.

  1. Only a

  2. Only a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: C
Explanation:

This is the correct option as this statement is false. Families are characterised on the basis of both vegetative and reproductive features of plant species.

Which of the following genera are placed in the family Solanaceae?

a. Cicuta b. Petunia c. Datura d. Solanum

  1. only a and b

  2. only a and c

  3. only a and d

  4. only b and c

  5. b, c and d


Correct Option: D
Explanation:

This is the correct option as the genera Solanum, Petunia and Datura are placed in the family Solanaceae.

Match the following:

   
Genus Family Order
a. Musca 1. Anacardiaceae p. Poales
b. Mangifera 2. Muscidae q. Diptera
c. Triticum 3. Poaceae r. Sapindales
  1. a - 2 - q, b - 1 - p, c - 3 - r

  2. a - 2 - q, b - 1 - r, c - 3 - p

  3. a - 2 - r, b - 1 - q, c - 3 - p

  4. c - 2 - q, a - 1 - r, b - 3 - p

  5. a - 2 - p, b - 1 - r, c - 3 - q


Correct Option: B
Explanation:

This is the correct option. The genus Musca belongs to the family Muscidae of the order Diptera. The genus Mangifera belongs to the family Anacardiaceae of the order Sapindales. The genus Triticum belongs to the family Poaceae of the order Poales.

Each genus may have one or more than one specific epithet representing different organisms, but having morphological similarities. Which of the following species is/are included in the genus Solanum?

a. Nigrum b. Melongena c. Tigris

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: B
Explanation:

This is the correct option. The genus Solanum includes species like nigrum and melongena.

Match the following:

 
a. Mango 1. Solanum tuberosum
b. Potato 2. Panthera leo
c. Lion 3. Mangifera indica
  1. a - 3, b - 1, c - 2

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

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

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

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


Correct Option: A
Explanation:

This is the correct option. The scientific name of mango is Mangifera indica. The scientific name of potato is Solanum tuberosum. The scientific name of lion is Panthera leo.

Order is the assemblage of families, which exhibit a few similar characters. Which of the following families is/are included in the order Polymoniales?

a. Convolvulaceae b. Solanaceae c. Canidae

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: B
Explanation:

This is the correct option. Plant families like Convolvulaceae and Solanaceae are included in the order Polymoniales mainly based on the floral characters.

Which of the following statements is/are false?

a. For plants, scientific names are based on agreed principles and criteria, which are provided in International Code for Botanical Nomenclature. b. The scientific names ensure that each organism has only one name and that such a name has not been used for any other known organism. c. In the scientific name Mangifera indica, 'Mangifera' represents a particular species, while 'indica' represents a genus.

  1. Only a

  2. Both a and b

  3. Only b

  4. Only c


Correct Option: D
Explanation:

This is the correct option as this statement is false.

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