LIVING WORLD (1)

Question 1

What would happen to the range and variety of organisms you see if you increase the area of observation?

A) It would decrease

B) It would remain the same

C) It would increase

D) It would become unpredictable

Answer: C) It would increase
Explanation:
If you were to increase the area that you make observations in, the range and variety of organisms that you see would increase.
(refer Pg.No.3 of NCERT)

Question 2

Approximately how many species of living organisms are known and described?

A) 1-2 million

B) 1.7-1.8 million

C) 2-3 million

D) 3-4 million

Answer: B) 1.7-1.8 million
Explanation:
The number of species that are known and described range between 1.7-1.8 million.
(refer Pg.No.3 of NCERT)

Question 3

What is the term for the process of assigning a scientific name to each known organism?

A) Nomenclature

B) Identification

C) Classification

D) Binomial nomenclature

Answer: A) Nomenclature
Explanation:
Nomenclature is the process of naming a particular organism by the same name all over the world.
(refer Pg.No.4 of NCERT)

Question 4

What is the significance of the International Code for Botanical Nomenclature (ICBN) and International Code of Zoological Nomenclature (ICZN)?

A) They provide guidelines for local naming of organisms

B) They provide procedures for assigning scientific names to organisms

C) They classify organisms into categories

D) They describe the characteristics of organisms

Answer: B) They establish procedures for assigning scientific names to organisms.
Explanation:
For plants, scientific names are based on agreed principles and criteria, which are provided in International Code for Botanical Nomenclature (ICBN).Animal taxonomists have evolved International Code of Zoological Nomenclature (ICZN).
(refer Pg.No.4 of NCERT)

Question 5

What are the two components of a scientific name in Binomial nomenclature?

A) Generic name and specific epithet

B) Local name and scientific name

C) Genus and family

D) Family and order

Answer: A) Generic name and specific epithet.
Explanation:
Each binomial name has two components – the Generic name and the specific epithet.
(refer Pg.No.4 of NCERT)

Question 6

What is the universal rule for writing biological names?

A) They are printed and underlined

B) They are printed in italics and Latinized

C) They are completely written in capital letters

D) They are completely written in lowercase letters

Answer: B) They are written in italics and Latinized. Explanation:
Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their Latin origin.
(refer Pg.No.4 of NCERT)

Question 7

What is the significance of the first word in a biological name starting with a capital letter?

A) It denotes the species

B) It denotes the genus

C) It denotes the family

D) It denotes the order

Answer: B) It denotes the genus.
Explanation:
The first word in a biological name represents the genus while the second component denotes the specific epithet.
(refer Pg.No.4 of NCERT)

Question 8

What is the purpose of the Binomial nomenclature system?

B) To provide a unique name for each organism

B) To simplify the naming of organisms

C) To classify organisms into categories

D) To describe the characteristics of organisms

Answer: A) To provide a unique name for each organism
Explanation:
The scientific names ensure that each organism has only one name. Description of any organism should enable the people (in any part of the world) to arrive at the same name
(refer Pg.No.4 of NCERT)

Question 9

Who developed the Binomial nomenclature system?

A) Albert Einstein

B) Charles Darwin

C) Gregor Mendel

D) Carolus Linnaeus

Answer: D) Carolus Linnaeus
Explanation:
The binomial nomenclature given by Carolus Linnaeus is being practised by biologists all over the world.
(refer Pg.No.4 of NCERT)

Question 10

What is the significance of the specific epithet in a scientific name?

A) It denotes the genus

B) It denotes the species

C) It denotes the family

D) It denotes the order

Answer: B) It denotes the species
Explanation:
The first word in a biological name represents the genus while the second component denotes the specific epithet.
(refer Pg.No.4 of NCERT)

Question 11

What is the purpose of underlining or printing biological names in italics?

A) To denote their complexity

B) To denote their importance

C) To denote their Latin origin

D) To denote their simplicity

Answer: C) To denote their Latin origin.
Explanation:
Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their Latin origin.
(refer Pg.No.4 of NCERT)

Question 12

What is the advantage of using a two-word format in Binomial nomenclature?

A) It simplifies the naming of organisms

B) It provides a unique name for each organism

C) It facilitates international communication among biologists

D) It is convenient to use

Answer: D) It is convenient to use.
Explanation:
The naming system using a two word format was found convenient.
(refer Pg.No.4 of NCERT)

Question 13

What is the relationship between the Generic name and the specific epithet in a scientific name?

A) The Generic name is a subset of the specific epithet

B) The specific epithet is a subset of the Generic name

C) The Generic name and specific epithet are unrelated

D) The Generic name and specific epithet are interchangeable

Answer: B) The specific epithet is a subset of the Generic name
Explanation:
Genus comprises a group of related species which has more characters in common in comparison to species of other genera.
(refer Pg.No.7 of NCERT)

Question 14

What does mangifera specify in Mangifera indica?

A)Specific epithet

B)Family

C)Phylum

D)Generic name

Answer:D)Generic name
Explanation:
In Mangifera indica, Mangifera represents the genus while indica, is a particular species, or a specific epithet.
(refer Pg.No.4 of NCERT)

Question 15

How does the concept of generic and specific epithets relate to the structure of scientific names?

A) Generic and specific epithets are interchangeable

B) Genera are used for species, while specific epithets are used for genus

C) Genera represent genus, while specific epithets represent species

D) Generic and specific epithets are unrelated to scientific names

Answer:C) Genera represent genus, while specific epithets represent species.
(refer Pg.No.4 of NCERT)

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