Give the function of each of the organelles listed: 1. Oral groove- 2. Micronucleus- 3. Macronucleus- 4. Contractile vacuole- 5. Food vacuole- 6. Cilia-

Which of the following best describes the function of the perch’s spleen?

Which of the following term is applied to the nasal openings of the perch?

Flatworms were the first organisms to evolve specialized cells for excretion (flame cells). What specific purpose does an excretory system serve?

A coelom in a segmented worm also serves as a hydrostatic skeleton.

What feature do Tardigrades and arthropods share?

Ecologically, sea stars are at what trophic level?

Crustacea are biramous, meaning they possess

The segments of crustaceans are covered with a dorsal plate or _____________ and a ventral plate or ______________.

When a parasitic insect is itself parasitized by another insect,