Grade 6 Science & Technology · Strand 1: Living things and the Environment · Inverterbrates
Sea and Aquatic Invertebrates
A short Grade 6 Science & Technology lesson for the CBE curriculum, part of Living things and the Environment: Inverterbrates. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. Which body part helps a crab or prawn to take in oxygen dissolved in water?
- A. Lungs that store air
- B. Feathery gills under the shell
- C. Stinging tentacles
- D. Tube feet
2. A starfish loses one arm to a hungry fish. What can the starfish do?
- A. Regrow the arm by regeneration
- B. Never recover the arm
- C. Shed its shell and grow a new one
- D. Squirt ink to make a new arm
3. Which group of animals has stinging cells called nematocysts on its tentacles?
- A. Crustaceans such as crabs
- B. Cnidarians such as jellyfish
- C. Echinoderms such as starfish
- D. Annelids such as earthworms
4. Wanjiru says a squid is a fish because it swims fast. Why is she wrong?
- A. Squids live only in fresh water
- B. Squids have a hard exoskeleton like crabs
- C. Squids have no backbone and are molluscs
- D. Squids breathe using lungs
5. What name is given to the process of a crab shedding its outgrown shell so that it can grow larger?
Type your answer in the lesson.
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