Zoo Fall Final Exam Review

Front

What is the Phylum of organisms that includes clams, snails, and octopuses?

Back

Phylum Mollusca.

Front

Which organism is considered to be the first on Earth?

Back

Sponge.

Front

What is a key characteristic of the circulatory system in cephalopods compared to bivalves and gastropods?

Back

Cephalopods have a more developed circulatory system than bivalves and gastropods.

Front

How do climate change effects manifest in poriferans and cnidarians?

Back

They expel their zooxanthellae and bleach, and ocean acidification affects their structures.

Front

What structures do aquatic mollusks use to circulate water from their environment?

Back

Siphons.

Front

What is the main function of the radula in mollusks?

Back

The radula is a tongue-like organ used for feeding, scraping food off surfaces.

Front

What are the two main classes of mollusks that are primarily aquatic?

Back

Bivalves and Cephalopods.

Front

What is the significance of zooxanthellae for corals and other cnidarians?

Back

Zooxanthellae are symbiotic algae that provide nutrients through photosynthesis.

Front

What is ocean acidification and how does it affect marine life?

Back

Ocean acidification is the decrease in pH of ocean waters, affecting organisms with calcium carbonate structures.

Front

What is the primary habitat of sponges?

Back

Sponges primarily inhabit marine environments, often found attached to surfaces.