Classification is a systematic process that arranges organisms into a hierarchy of categories. Each step in this hierarchy represents a rank such as species, genus, family, order, class, phylum, and kingdom. This hierarchical system helps scientists organize and study the diversity of living organisms.
2. A category that forms part of the overall taxonomic arrangement is called:
Correct Answer: B
In biological classification, organisms are arranged in different levels or groups. Each of these groups is called a taxonomic category. These categories together form the overall taxonomic arrangement used to classify living organisms.
3. All taxonomic categories together form the:
Correct Answer: A
In biological classification, each level such as species, genus, family, order, class, phylum, and kingdom is called a taxonomic category. When all these categories are arranged in order, they form the taxonomic hierarchy.
4. In taxonomy, each category that represents a rank is called:
Correct Answer: B
In biological classification, each category such as species, genus, family, order, class, phylum, and kingdom represents a rank. Each of these ranks or units of classification is called a taxon (plural: taxa).
5. Insects are recognised by the presence of:
Correct Answer: B
Insects are a group of organisms that share certain common characteristics. One of the main features of insects is that they have three pairs of jointed legs. This characteristic helps scientists classify and identify them within the animal kingdom.
6. Why are insects given a taxonomic rank or category?
Correct Answer: B
Insects share certain common characteristics such as three pairs of jointed legs. Because organisms with similar features can be recognised and grouped together, they can be classified and given a taxonomic rank or category in biological classification.
7. In taxonomy, each rank or taxon represents:
Correct Answer: B
In biological classification, organisms are grouped into categories. Each category represents a rank such as species, genus, family, order, class, phylum, and kingdom. Each of these ranks or taxa represents a unit of classification used to organize living organisms.
8. Taxonomic groups or categories are considered:
Correct Answer: B
Taxonomic groups are not just collections of organisms based only on similar physical appearance. They represent distinct biological entities that share evolutionary relationships and other biological characteristics. This makes taxonomy more meaningful and scientifically accurate.
9. Which of the following represents the common taxonomic categories?
Correct Answer: A
Taxonomic studies have organized living organisms into common hierarchical categories. These include kingdom, phylum (or division in plants), class, order, family, genus, and species. These ranks help scientists classify organisms in a systematic way.
10. In biological classification, the lowest taxonomic category is:
Correct Answer: D
In the taxonomic hierarchy, species is the lowest and most basic category. It represents a group of organisms that are similar and capable of interbreeding to produce fertile offspring. All organisms in both plant and animal kingdoms are classified at the species level.
11. What is the basic requirement for placing an organism in different taxonomic categories?
Correct Answer: A
To classify an organism into different taxonomic categories, scientists must study its characteristics. These may include morphological, anatomical, cellular, and ecological features. Knowledge of these characters helps in correctly identifying and placing organisms in the appropriate taxonomic groups.
12. Studying the characters of organisms mainly helps in:
Correct Answer: B
By studying the characters or features of organisms, scientists can identify similarities and differences among individuals of the same species as well as among different kinds of organisms. This comparison helps in proper identification and classification.