SCI7 Understanding classification.

Which of the following is NOT one of the five kingdoms used to classify living organisms?

• Animalia

• Plantae

• Fungi

• Bacteria

Answer explanation

Bacteria is not one of the five kingdoms used to classify living organisms. The five kingdoms are Animalia, Plantae, Fungi, Protista, and Monera.

What is the primary purpose of a dichotomous key?

• To show the evolutionary relationships between organisms

• To classify organisms based on hierarchical traits

• To identify organisms using a series of yes/no questions

• To list all known species of plants and animals

Answer explanation

The primary purpose of a dichotomous key is to identify organisms using a series of yes/no questions.

Which of the following best describes a hierarchical classification system?

• A system that classifies organisms into groups based on shared characteristics

• A system that uses a single characteristic to separate organisms into two groups

• A system that ranks organisms based on their size

• A system that organizes organisms randomly

Answer explanation

A hierarchical classification system is a system that classifies organisms into groups based on shared characteristics.

In a dichotomous key, what does each step consist of?

• A single question with multiple answers

• Two statements, one of which applies to the organism being identified

• A list of all possible characteristics of an organism

• A detailed description of the organism's habitat

Answer explanation

In a dichotomous key, each step consists of two statements, one of which applies to the organism being identified.

How does a dichotomous classification system differ from a hierarchical classification system?

• A dichotomous system uses a branching method, while a hierarchical system uses a linear method

• A dichotomous system is used for living organisms, while a hierarchical system is used for non-living things

• A dichotomous system is simpler and less detailed than a hierarchical system

• A dichotomous system is used for identification, while a hierarchical system shows relationships and ranks

Answer explanation

A dichotomous system is used for identification, while a hierarchical system shows relationships and ranks

Which kingdom do mushrooms belong to?

• Animalia

• Plantae

• Fungi

• Protista

Answer explanation

Mushrooms belong to the Fungi kingdom. Fungi is the correct choice as mushrooms are not classified as animals or plants, but as a separate kingdom.

What is the main advantage of using a dichotomous key?

• It provides a detailed evolutionary history of the organism

• It allows for quick and accurate identification of organisms

• It can classify organisms into a large number of categories

• It helps in understanding the genetic makeup of an organism

Answer explanation

The main advantage of using a dichotomous key is that it allows for quick and accurate identification of organisms.

Which of the following is an example of applying the concept of classification in real life?

• Sorting laundry into colors and whites

• Deciding what to eat for dinner

• Choosing which movie to watch

• Calculating a math problem

Answer explanation

Classification is applied in real life when sorting laundry into colors and whites.

In the hierarchical classification system, which rank comes directly below the kingdom?

• Class

• Order

• Family

• Phylum

Answer explanation

In the hierarchical classification system, the rank directly below the kingdom is the phylum. It is a higher rank than class, order, and family.

Why is it important to classify living organisms?

• To make it easier to communicate about different types of organisms

• To ensure all organisms are given a name

• To create a more complex system for scientists to study

• To prove which organisms are superior

Answer explanation

Classifying living organisms is important to facilitate communication and understanding of different types of organisms.