1. Why have scientists established procedures for assigning scientific names to organisms?
Correct Answer: B
Scientists have developed standard procedures for assigning scientific names so that each organism is identified clearly and consistently. These naming rules are accepted by biologists all over the world, which helps avoid confusion and ensures accurate communication in biological studies.
2. Scientific naming of plants follows the principles given in:
Correct Answer: A
The scientific naming of plants follows a set of internationally accepted rules known as the International Code for Botanical Nomenclature (ICBN). These rules ensure that each plant has a unique and universally accepted scientific name.
3. The scientific naming of animals follows the rules given in:
Correct Answer: B
Animal taxonomists follow a set of internationally accepted rules called the International Code of Zoological Nomenclature (ICZN). These rules help in giving unique and standard scientific names to animals so that they can be correctly identified and studied worldwide.
4. Scientific names are used to ensure that each organism:
Correct Answer: B
Scientific naming provides a universal system in which each organism is given a unique name. This prevents confusion that can arise from different local names used in different regions and ensures that scientists all over the world refer to the same organism using a single accepted name.
5. Why should the description of an organism be clear and detailed?
Correct Answer: A
A proper scientific description of an organism helps scientists anywhere in the world identify it correctly and assign the same scientific name. It also ensures that the name given to the organism has not already been used for another known organism, preventing duplication and confusion.
6. Scientific naming of organisms uses names with how many components?
Correct Answer: B
Biologists follow universally accepted rules to give scientific names to organisms. Each scientific name has two components. This system is called binomial nomenclature. The first part represents the genus and the second part represents the species. This two-part naming system helps scientists identify organisms clearly all over the world.
7. In binomial nomenclature, the two components of a scientific name are:
Correct Answer: B
In binomial nomenclature, each scientific name has two parts. The first part is the generic name (genus), which indicates the group to which the organism belongs. The second part is the specific epithet, which identifies the particular species within that genus.
8. The system of giving a scientific name with two components is called:
Correct Answer: B
Binomial nomenclature is the scientific system of naming organisms using two parts. The first part is the generic name (genus) and the second part is the specific epithet (species). This system ensures that every organism has a unique and universally accepted scientific name.
9. Who introduced the system of binomial nomenclature used by biologists worldwide?
Correct Answer: C
The system of binomial nomenclature was introduced by Carolus Linnaeus. In this system, every organism is given a two-part scientific name consisting of a generic name (genus) and a specific epithet (species). This naming system is universally used by biologists across the world.
10. What is the scientific name of mango in binomial nomenclature?
Correct Answer: A
In binomial nomenclature, every organism is given a two-word scientific name. The first word represents the genus and the second word represents the species. For mango, the genus is Mangifera and the species is indica. Therefore, the scientific name of mango is written as Mangifera indica.
11. In the scientific name Mangifera indica, what does 'indica' represent?
Correct Answer: C
In the binomial name Mangifera indica, the first word 'Mangifera' represents the genus. The second word 'indica' represents the specific epithet or species. Together they form the complete scientific name of the organism.
12. In the scientific name Mangifera indica, what does 'Mangifera' represent?
Correct Answer: A
In the binomial name Mangifera indica, the first word 'Mangifera' represents the genus. The second word 'indica' represents the specific epithet or species. Together they form the complete scientific name of the organism.
13. According to the rules of nomenclature, biological names are generally written in:
Correct Answer: B
According to the universal rules of biological nomenclature, scientific names are usually written in Latin and printed in italics. Even if the words come from other languages, they are Latinised. This rule helps maintain uniformity and standardisation in the scientific naming of organisms worldwide.
14. In a biological name, what does the first component represent?
Correct Answer: A
In binomial nomenclature, a scientific name has two parts. The first part represents the genus, which is the group of closely related organisms. The second part represents the specific epithet, which identifies the particular species within that genus.
15. In a biological name, what does the second component represent?
Correct Answer: C
In binomial nomenclature, a scientific name has two parts. The first part represents the genus, which is the group of closely related organisms. The second part represents the specific epithet, which identifies the particular species within that genus.
16. How are biological names written when handwritten?
Correct Answer: C
According to the rules of biological nomenclature, scientific names are printed in italics. However, when they are handwritten, both words of the biological name are separately underlined. This indicates their Latin origin and follows the standard scientific convention.
17. In binomial nomenclature, how are the genus and specific epithet written?
Correct Answer: B
According to the rules of binomial nomenclature, the first word of a scientific name represents the genus and begins with a capital letter. The second word represents the specific epithet and starts with a small letter. This rule helps maintain uniformity in writing scientific names.
18. In the scientific name Mangifera indica, which word starts with a capital letter?
Correct Answer: C
In binomial nomenclature, the first word of a scientific name represents the genus and always starts with a capital letter. The second word represents the specific epithet and begins with a small letter. For example, in Mangifera indica, 'Mangifera' is the genus and starts with a capital letter, while 'indica' is the specific epithet and starts with a small letter.
19. In biological nomenclature, the author's name is written:
Correct Answer: C
In scientific naming, the name of the author who first described the organism is written after the specific epithet. It usually appears in an abbreviated form. This helps identify the scientist who originally described and named the species.
20. In the name Mangifera indica Linn., what does 'Linn.' indicate?
Correct Answer: C
In biological nomenclature, the author's name is written after the specific epithet in abbreviated form. In the name Mangifera indica Linn., 'Linn.' refers to Carolus Linnaeus, the scientist who first described and named the species.