![]() ![]() Whereas many are marine, a large number of species have diversified in freshwater and terrestrial habitats. Much of what we know about past changes in climate and mass extinctions comes from mollusk fossils. youtube/watch?v=ZiULxLLP32s c) What is the most likely reason why anemones and corals are restricted to shallower waters? Station 3: Mollusks Mollusks are a diverse group of animals that includes more than 75,000 extant species and an extensive fossil record. How might this relationship benefit both the shrimp and the sponge? Benefit to shrimp: Benefit to sponge: Station 2: Cnidarians a) How do cnidarians capture and consume their food? See these videos youtube/watch?v=u_LU1GA6pu ed.ted/lessons/how-does-a-jellyfish-sting-neosha-s-kashef b) Observe the coral figures from your text and videos and explain how corals, like all cnidarians, exhibit radial symmetry. They spend the rest of their lives inside the sponge, and when they mate, their tiny offspring are able to leave. This sponge often houses a male and female shrimp who entered when they were tiny then grew too large to be able to swim out of the sponge. This sponge has large glass spicules that fuse to form an extensive glass structure. Use information presented in lab, as well as what you’ve learned in readings and lecture videos in the pre-lab folder on LP, to answer the following questions: Station 1: Sponges a) How might the feeding strategy used by the Portifera (sponges) have a positive effect on the marine environment? View this video youtube/watch?v=pTZ211cIjX8&vl=en b) Sponges are sessile (they are stuck in place), so how do they sexually reproduce? c) Observe this short video youtube/watch?v=pKxxRsxV4rY on the glass Venus’ Flower Basket sponge. ![]() videos, observe the diversity of animal specimens and accompanying information, and consider the major adaptations and evolutionary trends in these groups. 1 ANIMAL DIVERSITY LAB Name _ Section _ As you go through the “stations” a.k. ![]()
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