
Evolutionary Adaptations in Stomachless Animals
Interactive Video
•
Biology, Science
•
7th - 12th Grade
•
Hard

Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main focus of the video regarding certain animals?
The role of stomachs in all animals
Why some animals have lost their stomachs
The digestive process in humans
The evolution of vertebrates
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When did the first signs of stomach glands appear in vertebrates?
200 million years ago
50 million years ago
450 million years ago
100 million years ago
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which group of fish is most commonly associated with agastric guts?
Bony fish
Teleost fish
Cartilaginous fish
Jawless fish
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one proposed reason for the loss of stomachs in some species?
Improved mobility
Increased body size
Better vision
Energy savings
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How might a change in diet influence the evolution of a stomachless condition?
By increasing the need for stomach acids
By enhancing the absorption of nutrients
By reducing the need for protein digestion
By neutralizing stomach acids with calcium
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What adaptation do some stomachless animals have to aid in digestion?
Extra limbs
Enhanced teeth for grinding
Larger brains
Longer lifespans
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do some stomachless species manage pathogen defense?
By developing stronger immune systems
By living in sterile environments
By avoiding closely related food sources
By increasing stomach acid production
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