Natural sciences
Ecosystems and the environmental balance
Educator section
Memorandum
CRITERIA | 1 | 2 | 3 | 4 |
Creative layout | ||||
Meaningful illustrations | ||||
Completeness |
Leaner section
Content
Activity: to classify animals according to their characteristics [lo 2.2]
Animals with a backbone or spinal column and an internal skeleton (endoskeleton) are placed in one group and animals without a backbone or a spinal column are placed in another group. Animals in the group with a spinal column are called vertebrates or Vertebrata. Animals in the group without a backbone or spinal column are called invertebrates or Invertebrata. The bodies of some of the Invertebrata are protected by a hard covering on the outside, e.g. the crab or the grasshopper. This hard covering is known as the external skeleton or exoskeleton.
An interesting question: fungi are not indicated as part of either the plants or the animals. Try to found out where they belong.
Assignment 4:
Study the following sketches and group the animals on the basis of the preceding diagram.
FISH | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
__________ | __________ | __________ | __________ | __________ |
CRITERIA | YES/NO |
Could classify animals easily | ___________________________ |
Classified most animals correctly | ___________________________ |
Require more exercise in classification | ___________________________ |
(i) Criteria for sorting vertebrates
Vertebrates can be sorted on the basis of their type of body covering.
Assignment 5:
Consult the diagram once again and provide a diagrammatical representation of the various vertebrates with their specific body covering. Be creative and use illustrations as well as words.
Assessment
Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.
Assessment Standard 2.2: We know this when the learner categorises information.