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- 1. Multiple Choice
What serves living things with support, movement and protection? (REM)
Bone
Muscles
Skeleton
Tendons
- 2. Multiple Choice
What is a major difference between a hydrostatic skeleton and an endoskeleton? (UND)
A hydrostatic skeleton is located inside the body and the endoskeleton outside.
A hydrostatic skeleton is found in worms and an endoskeleton in invertebrates.
An endoskeleton is located inside of the bodies of vertebrates and are composed of bone, while hydrostatic skeletons are fluid filled skeletons.
Both ( option 1 and 2)
- 3. Multiple Choice
Which type of skeleton does a snail posses? (UND)
Endoskeleton
Hydrostatic skeleton
Exoskeleton
Both ( hydrostatic skeleton and exoskeleton)
- 4. Multiple Choice
What is the exoskeleton made of ? (REM)
Bone
Chitin
Fluid
None of the above
- 5. Multiple Choice
Muscle movement in exoskeletons and hydrostatic skeletons are compared as follows: (APP)
Body plates with flexible joints are formed with flexible joints, the animal's muscles attach to the exoskeleton and allows it to control its movement. While in hydrostatic skeletons, muscles contact setting up a pressure in the fluid.
in hydrostatic skeletons flexible joints forms, muscles attach to the skeleton and allows it to control its movement. In exoskeletons muscles contract and a pressure is set up allowing the animal to move.
None of the above.
Both.
- 6. Multiple Choice
Identify the type of skeleton that the following animal possesses and at least one advantage and disadvantage. (APP)
Exoskeleton. Adv: Reduces water loss disadvantage: the size of the animal is limited.
Hydrostatic skeleton: advantage: does not require any specialized support structures dis: the animal has to moult in order to grow.
Endoskeleton. Adv: protects internal organs. dis: takes a long time to repair.
Hydrostatic skeleton. Adv: does not require attachment for muscles. dis: limited in size and speed.
- 7. Multiple Choice
What is the role that chitin plays in an exoskeleton? (UND)
It fills the body cells and cavities in the body.
It enables the exoskeleton to grow and stretch.
It forms body plates with flexible joints which allows for muscle attachment.
None of the above.
- 8. Multiple Choice
The main skeletons types are classified as ... (REM)
Endoskeleton (opt. 1)
Exoskeleton (opt.2)
Human skeleton (opt.3)
Hydrostatic skeletons (opt.4)
Options ( 1,2,4)
- 9. Multiple Choice
The vertebral column in endoskeletons provides protection for animals in the following way: (APP)
Protects the central nerve cord.
Allows for muscles to act against it to support the animal and allow it move and escape danger.
None of the above
All of the above.
- 10. Multiple Choice
Hydrostatic skeletons occur in... (ANA)
Flatworms, roundworms, earthworms, starfish and slugs.
Frogs and newts.
Insects, spiders, scorpions and crabs.
All of the above.
- 11. Multiple Choice
Lack of protection is a disadvantage for which skeleton type? (ANA)
Endoskeleton
Hydrostatic skeleton
Exoskeleton
None of the above
- 12. Multiple Choice
What characteristics supports exoskeleton?(EVA )
Limits the size of the animals.
Great flexibility.
Bones can vary in size to support mass.
Fluid shape.
- 13. Multiple Choice
Determine the incorrect answer. (EVA)
Disadvantages of exoskeleton:
Limits the size of the animal.
Creates difficulties in growth.
Vulnerability during moulting.
Limited strength.
- 14. Multiple Choice
What would happen if animals with a hydrostatic skeleton were removed from water? (CRE)
Nothing, they do not need water.
They would die immediately.
They would become dehydrated.
Greater flexibility.
- 15. Multiple Choice
If animals with an endoskeleton begin to grow... (CRE)
There bones are limited to size.
There bones can vary in size to support mass.
They need to moult to increase in size.
They will have great difficulties.
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