NCERT Class 11 Biology Chapter 1 “The Living World” important questions and answers covering classification of organisms, taxonomical hierarchy, scientific nomenclature, species concept, and taxa. Clear, exam-oriented answers prepared strictly as per the latest NCERT syllabus for CBSE Class XI Biology students.
Question No. 5
Given below is the scientific name of Mango. Identify the correctly written name.
Mangifera Indica
Mangifera indica
Answer: Mangifera indica
Explanation: In scientific nomenclature, the generic name begins with a capital letter, the specific epithet begins with a small letter, and both words are written in italics or underlined separately.
Question No. 7
Can you identify the correct sequence of taxonomical categories?
(a) Species → Order → Phylum → Kingdom
(b) Genus → Species → Order → Kingdom
(c) Species → Genus → Order → Phylum
Answer: (c) Species → Genus → Order → Phylum
Question No. 9
Define the following terms:
(i) Phylum: A group of related classes that share basic structural and organisational similarities.
(ii) Class: A group of related orders having common characteristics.
(iii) Family: A group of related genera with more similarities than differences.
(iv) Order: A group of related families.
(v) Genus: A group of closely related species.
Question No. 10
Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
Example 1: Plant (Mango)
Kingdom : Plantae ↓ Division : Angiospermae ↓ Class : Dicotyledonae ↓ Order : Sapindales ↓ Family : Anacardiaceae ↓ Genus : Mangifera ↓ Species : Mangifera indica
Example 2: Animal (Human)
Kingdom : Animalia ↓ Phylum : Chordata ↓ Class : Mammalia ↓ Order : Primates ↓ Family : Hominidae ↓ Genus : Homo ↓ Species : Homo sapiens