Echinoderms, such as sea stars, move using:

A water-vascular system and tube feet

What was the significance of the oxygen revolution for marine life?

It allowed for the evolution of more complex, multicellular organisms by increasing oxygen levels in the ocean.

It caused the extinction of all marine life due to toxic oxygen levels.

It led to a decrease in biodiversity by favoring only single-celled organisms.

It resulted in the oceans becoming completely frozen.

Describe two main differences between cartilaginous and bony fish.

Cartilaginous fish have skeletons made of cartilage and lack swim bladders, while bony fish have skeletons made of bone and possess swim bladders.

Cartilaginous fish have scales and bony fish do not have scales.

Cartilaginous fish breathe through lungs, while bony fish breathe through gills.

Cartilaginous fish live only in freshwater, while bony fish live only in saltwater.

What are two adaptations that help fish maintain buoyancy and movement in water?

Swim bladders for buoyancy and fins for movement.

Gills for breathing and scales for protection.

Sharp teeth for hunting and large eyes for vision.

Long tails for balance and thick skin for warmth.

Explain the difference between hermatypic and ahermatypic corals.

Hermatypic corals build reefs and contain symbiotic algae, while ahermatypic corals do not build reefs and usually lack symbiotic algae.

Hermatypic corals do not build reefs and lack symbiotic algae, while ahermatypic corals build reefs and contain symbiotic algae.

Both hermatypic and ahermatypic corals build reefs and contain symbiotic algae.

Ahermatypic corals build reefs and contain symbiotic algae, while hermatypic corals do not build reefs and usually lack symbiotic algae.

What evolutionary advantage does having a backbone provide?

It provides structural support and protects the spinal cord, allowing for greater mobility and complexity.

It increases the rate of photosynthesis in animals.

It allows organisms to breathe underwater without gills.

It enables direct absorption of nutrients through the skin.

Why are marine reptiles generally found in tropical regions?

Because they are ectothermic (cold-blooded) and require warm temperatures to regulate their body heat.

Because tropical regions have more food sources for marine reptiles.

Because marine reptiles cannot survive in saltwater found in colder regions.

Because tropical regions have fewer predators for marine reptiles.

What role do salt glands play in marine reptiles and birds?

Salt glands help excrete excess salt from the body, allowing them to survive in marine environments.

Salt glands help in digesting food more efficiently.

Salt glands are used for attracting mates during breeding season.

Salt glands help in regulating body temperature by producing sweat.

List two features shared by all marine mammals.

They are warm-blooded and give live birth (or nurse their young).

They breathe through gills and have feathers.

They are cold-blooded and undergo metamorphosis.

Give an example of an animal from each of the following groups: - Reptile: __________ - Bird: __________ - Mammal: __________

Reptile: Sea turtle Bird: Penguin Mammal: Dolphin

Reptile: Frog Bird: Bat Mammal: Crocodile

Reptile: Whale Bird: Lizard Mammal: Ostrich

Reptile: Eagle Bird: Kangaroo Mammal: Snake

What is the primary source of food energy for all marine animals?

Phytoplankton (or sunlight via photosynthesis)

A water-vascular system and tube feet

The oxygen revolution increased oxygen levels in the ocean and atmosphere, allowing what to evolve?

Larger, more complex marine animals

Cartilaginous fish (like sharks) have skeletons made of cartilage, while bony fish have skeletons made of bone and a swim bladder for buoyancy. Which of the following statements is correct?

Cartilaginous fish have skeletons made of cartilage, while bony fish have skeletons made of bone and a swim bladder.

Bony fish have skeletons made of cartilage, while cartilaginous fish have skeletons made of bone.

Both cartilaginous and bony fish have skeletons made of bone.

Cartilaginous fish have a swim bladder, while bony fish do not.

Hermatypic corals build reefs in shallow, warm waters, while ahermatypic corals live in deep water and do not form reefs. Which type of coral is responsible for reef building?

Both hermatypic and ahermatypic corals

Neither hermatypic nor ahermatypic corals

16. Marine reptiles require warm water because they are cold-blooded and depend on external temperatures to regulate body heat.

They are cold-blooded and depend on external temperatures to regulate body heat.

They need warm water to breathe underwater.

They use warm water to find food easily.

They are warm-blooded and generate their own heat.

Marine Animals Worksheet

Authored by Coach Hernandez

Science

11th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

Porifera

Cnidaria

Nematoda

Mollusca

Cephalopods, such as octopus and squid, are part of which phylum?

Mollusca

Arthropoda

Echinodermata

Chordata

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Marine Animals Worksheet

The oxygen revolution was important because it led to:

Animals are defined as:

Phylum Porifera includes:

Cnidarians use cnidoblasts for:

Hermatypic corals are known for:

Worms with bilateral symmetry and a flow-through digestive system belong to which phylum?

Cephalopods, such as octopus and squid, are part of which phylum?

The most successful animal phylum on Earth is:

Echinoderms, such as sea stars, move using:

A notochord is characteristic of which phylum?

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