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Marine Biology at a Glance Trivia Quiz

Here is a little quiz over various things in the ocean environment. Some are easy, some may be harder, but all is interesting to know, so dive in and 'sea' how you do!

A multiple-choice quiz by randyaimee. Estimated time: 3 mins.

Author
randyaimee

Time
3 mins

Type
Multiple Choice

Quiz #
26,319

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
6 / 10

Plays
4064

One at a Time - Single Page - Timed Game

Question 1 of 10

1. The phylum Porifera includes what animals? Hint

sponges

fish

crabs

sharks

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Question 2 of 10

2. If an animal is considered sessile, what does that mean? Hint

lives in open water

free floating

permanently attached to a surface

lives near a reef

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Question 3 of 10

3. A jellyfish lacks three of the listed options. Which one does it have? Hint

nerve net

heart

brain

eyes

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Question 4 of 10

4. The nematocyst of the jellyfish does what?

Answer: (ouch! One word, 5 or 6 letters.)

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Question 5 of 10

5. Which of these is the biggest known jellyfish in the world? Hint

moon jellyfish

comb jellyfish

lion's mane jellyfish

giant jellyfish

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Question 6 of 10

6. What are zooxanthallae? Hint

a deep dwelling fish

species of dolphin

a type of crab

single cell algae living in coral

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Question 7 of 10

7. Which animal is not found in the phylum arthropoda? Hint

starfish

barnacle

crab

shrimp

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Question 8 of 10

8. Which is the biggest ocean in the world? Hint

Pacific

Indian

Atlantic

Arctic

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Question 9 of 10

9. What kind of animal is the horse conch? Hint

snail

mammal

fish

insect

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Question 10 of 10

10. Kemp's ridley is a variety of which of these sea creatures? Hint

turtle

octopus

jellyfish

squid

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Quiz Answer Key and Fun Facts

1. The phylum Porifera includes what animals?

Answer: sponges

Porifera means pore bearing, such as a sponge.

2. If an animal is considered sessile, what does that mean?

Answer: permanently attached to a surface

Sessile means attached and animals like barnacles, oysters, and bryozoa.

3. A jellyfish lacks three of the listed options. Which one does it have?

Answer: nerve net

They are very primitive animals.

4. The nematocyst of the jellyfish does what?

Answer: stings

The nematocyst is also known as the cnidocyst. It can be a means of defense or assist in capturing prey.

5. Which of these is the biggest known jellyfish in the world?

Answer: lion's mane jellyfish

They can grow to be over 100 feet long!

6. What are zooxanthallae?

Answer: single cell algae living in coral

The algae provide oxygen to the coral and also remove waste, while the coral provides shelter for the algae in a mutually beneficial relationship.

7. Which animal is not found in the phylum arthropoda?

Answer: starfish

Arthropoda is the biggest phylum in the world because it includes all species of insects. Starfish are echinoderms.

8. Which is the biggest ocean in the world?

Answer: Pacific

The Pacific is both the largest and deepest of the oceans.

9. What kind of animal is the horse conch?

Answer: snail

Is the second biggest snail in the world, behind the queen conch.

10. Kemp's ridley is a variety of which of these sea creatures?

Answer: turtle

The Kemp's ridley sea turtle is the smallest of the sea turtles and is classed as critically endangered. It can be found in the Gulf of Mexico.

Source: Author randyaimee

This quiz was reviewed by FunTrivia editor gtho4 before going online.
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