Question 1: What percentage of water makes up a jellyfish’s body?
A 0.85
B 0.95
C 0.75
Jellyfish are composed of approximately 95% water, which is a significant characteristic that contributes to their jelly-like consistency and ability to float in the ocean.
Correct Answer: 0.95
Question 2: Which class of invertebrates do jellyfish belong to?
A Arthropoda
B Cnidaria
C Mollusca
Jellyfish are part of the invertebrate class Cnidaria, which includes other creatures like corals and sea anemones. They are known for their unique stinging cells.
Correct Answer: Cnidaria
Question 3: What significant role do jellyfish play in the ocean ecosystem?
A Aquatic plants
B Links in the food chain
C Pollutants
Jellyfish serve as vital links in the marine food chain, acting as prey for various species like turtles, sunfish, and seabirds, thus influencing the health of ocean ecosystems.
Correct Answer: Links in the food chain