What is one reason jellyfish are considered ancient creatures?
How to live without a heart or a brain - Lessons from a Jellyfish

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Physics, Science, Chemistry
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KG - University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They have a complex brain.
They are related to mammals.
Their ancestors date back 500 million years.
They have a complete digestive system.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do jellyfish sense their environment without a central nervous system?
With the help of a heart.
By using a complex brain.
By relying on other sea creatures.
Through a nerve net spread throughout their body.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of ropalia in jellyfish?
To store oxygen.
To pump blood throughout the body.
To sense light and maintain balance.
To help them digest food.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do jellyfish meet their oxygen needs without a heart?
By absorbing oxygen through their ectoderm.
By storing oxygen in their stomach.
By using lungs.
By filtering oxygen from food.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary component of a jellyfish's body structure?
Bone and muscle.
Mesoglia, a jelly-like fluid.
Thick skin layers.
Cartilage.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do jellyfish digest their food?
By absorbing nutrients through their skin.
Through the gastrovascular cavity.
By using a liver and pancreas.
With a complete digestive system.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What evolutionary significance do jellyfish hold?
They have the most complex nervous system.
They represent nature's first draft of a nervous system.
They are the first animals to develop a brain.
They are the only animals with a nerve ring.
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