Biology 12 Chapter 16 - Support and Movements - 24

Biology 12 Chapter 16 - Support and Movements - 24

1. By which snails and mussels move slowly?
None
Tube feet
Wings
Foot

2. The arms of starfish help in …………….?
Walking
Flying
Swimming
Crawling

3. Buoyancy in the water is maintained by a specialized structure in bony fish called?
None of these
Swim bladder
Bladder
Gall bladder

4. In the anurans the method of locomotion is?
Running and walking
Swimming and jumping
Crawling and swimming
Walking and jumping

5. Which of the following cervical vertebrae modified for rotation in reptiles?
Atlas
Lumber
All of these
Axis

6. The sternum is modified to form ……….?
Hail
Nail
Keel
Peel

7. Which of the following is the modification in the body of birds for flight?
All of these
Bone with large air spaces
Body covered with feathers
Fore limbs evolved into wings

8. What is Correct about passive flight?
Achieved by flapping
Reduce air pressure below the wings
All of these
Achieved by gliding

9. What is Correct about active flight?
Wings act as aerofoils
Achieved by flapping the wings
Air flows over the wing
Increase air pressure on the wings top

10. In which mode of locomotion mammals walk on their soles, palm, wrist and digits?
Unguligrade
Digitigrade
None
Plantigrade

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