Class 6 Exam  >  Class 6 Notes  >  IGCSE Cambridge Science for Year 6  >  Worksheet: Classification

Worksheet: Classification | IGCSE Cambridge Science for Year 6 - Class 6 PDF Download

Multiple Choice Questions (MCQs):

Q1. What is used primarily to classify organisms into different groups?

A) Behavior

B) Characteristics

C) Habitat

D) Size

Answer: B) Characteristics

Explanation: Organisms are classified based on their similarities and differences in characteristics, such as physical traits and genetic features.

Q2. Which characteristic is not shared between humans and tigers?

A) Hair

B) Two legs

C) Fur

D) Warm-blooded

Answer: B) Two legs

Explanation: Unlike humans, tigers have four legs, which highlights a significant difference in their physical characteristics.

Q3. What type of plants would you classify under the group that includes mosses?

A) Flowering plants

B) Conifers

C) Non-flowering plants

D) Ferns

Answer: C) Non-flowering plants

Explanation: Mosses are classified under non-flowering plants, which do not produce flowers or seeds.

Q4. Who introduced the system to classify organisms based on characteristics in the 18th century?

A) Charles Darwin

B) Gregor Mendel

C) Carl Linnaeus

D) Louis Pasteur

Answer: C) Carl Linnaeus

Explanation: Carl Linnaeus was pivotal in developing a classification system based on organism characteristics, which is still in use.

Q5. What is the smallest group in the Linnaean system identified by two Latin names?

A) Order

B) Genus

C) Family

D) Species

Answer: D) Species

Explanation: In Linnaean taxonomy, a species is the smallest unit, identified by a binomial nomenclature consisting of two Latin names.

Fill in the Blanks:

Q1. Variation refers to the differences in __________ among organisms within the same group.

Answer: characteristics

Explanation: Variation means the differences observed in the characteristics of organisms that are grouped together.

Q2. The classification system that involves kingdoms requires __________ examination to observe cellular structures.

Answer: microscopic

Explanation: Many characteristics used for classifying organisms into kingdoms, like cellular structures, need to be observed under a microscope.

Q3. Hybrids are usually __________, meaning they cannot produce offspring.

Answer: infertile

Explanation: Hybrids, the offspring of two different species, are typically infertile and cannot reproduce.

Q4. __________ keys are used to identify and classify organisms using a series of questions.

Answer: Dichotomous

Explanation: Dichotomous keys help in the identification and classification of organisms through a sequential approach using questions with two possible answers.

Q5.  Flowering plants are distinguished by their __________ systems and __________ shapes.

Answers: root, leaf

Explanation: Flowering plants have distinctive root systems and leaf shapes, which are important for classification.

True or False:

Q1. All animals in the Animal Kingdom are vertebrates.

Answer: False

Explanation: The Animal Kingdom includes both vertebrates (animals with backbones) and invertebrates (animals without backbones).

Q2.  The Linnaean system is no longer used in modern taxonomy.

Answer: False

Explanation: Despite advancements in genetic data, the Linnaean system of classification continues to be a foundational framework in taxonomy.

Q3. All trees produce flowers.

Answer: False

Explanation: Not all trees produce flowers; for example, conifers produce cones instead of flowers.

Q4. Viruses are considered living organisms.

Answer : False

Explanation: Viruses are not considered living organisms as they lack the seven life processes.

Q5. Leaf characteristics, such as edges, shape, and arrangement, can be useful in identifying specific trees or plants.

Answer: True

Explanation: Leaf characteristics (edges, shape, arrangement) are often useful for identifying specific trees or plants. 

Match The Following

Worksheet: Classification | IGCSE Cambridge Science for Year 6 - Class 6 

Answer

Carl Linnaeus - b. Developed the classification system

Species - e. Group of organisms that can interbreed

Vertebrates - c. Have a backbone

Viruses - d. Lack seven life processes

Dichotomous keys - a. Identify organisms based on a series of questions

The document Worksheet: Classification | IGCSE Cambridge Science for Year 6 - Class 6 is a part of the Class 6 Course IGCSE Cambridge Science for Year 6.
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FAQs on Worksheet: Classification - IGCSE Cambridge Science for Year 6 - Class 6

1. What is the purpose of classifying organisms?
Ans. The purpose of classifying organisms is to organize and categorize them based on their similarities and differences, making it easier to study and understand the vast diversity of living things.
2. How are organisms classified into different groups?
Ans. Organisms are classified into different groups based on their shared characteristics, such as physical features, genetic traits, and evolutionary relationships. This classification system helps scientists identify and study organisms more effectively.
3. What are the main classification categories used in biology?
Ans. The main classification categories used in biology are domain, kingdom, phylum, class, order, family, genus, and species. These categories help organize organisms into increasingly specific groups based on their characteristics.
4. Why is it important to understand the classification of organisms?
Ans. Understanding the classification of organisms is important because it helps scientists study the relationships between different species, track evolutionary changes, and make predictions about an organism's behavior, habitat, and characteristics based on its classification.
5. How does the Linnaean classification system work?
Ans. The Linnaean classification system, created by Carl Linnaeus, categorizes organisms into hierarchical groups based on shared characteristics. This system includes naming organisms with a two-part Latin name (binomial nomenclature) and organizing them into increasingly specific taxonomic categories.
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