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- Interactive video for next 10 questions00:00 / 07:531. Multiple Choice01:3830 seconds1 pt
What is a unique characteristic of all chordates?
Presence of scales
Ability to fly
Dorsal hollow nerve cord
Warm-bloodedness
2. Multiple Choice02:4930 seconds1 ptWhich group of vertebrates are known as ectotherms?
Only reptiles
Birds and mammals
Fish, amphibians, and reptiles
Only amphibians
3. Multiple Choice02:4930 seconds1 ptWhich vertebrates are considered endotherms?
Only mammals
Fish and amphibians
Birds and mammals
Reptiles and birds
4. Multiple Choice02:5630 seconds1 ptWhat is the primary way fish obtain oxygen?
Absorbing from water
Through their skin
Using lungs
Through their gills
5. Multiple Choice03:1930 seconds1 ptWhat distinguishes cartilaginous fish from other fish?
Bones made of cartilage
Presence of swim bladders
Absence of jaws
Warm-bloodedness
6. Multiple Choice03:3630 seconds1 ptHow do most sharks ensure water flows over their gills?
Breathing air
Continuous swimming
Using a pumping mechanism
By staying still
7. Multiple Choice05:0030 seconds1 ptWhat adaptation allows bony fish to maintain stability at different depths?
Gills
Scales
Swim bladder
Powerful fins
8. Multiple Choice05:2530 seconds1 ptWhat does the term 'amphibian' mean?
Cold-blooded
Double life
Land dwellers
Water breathers
9. Multiple Choice05:4430 seconds1 ptDuring which stage do amphibians typically undergo metamorphosis?
After death
As larvae
During the egg stage
As adults
10. Multiple Choice07:4630 seconds1 ptWhat is a significant environmental challenge facing amphibians?
Lack of food
Overpopulation
Excessive cold
Habitat destruction
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