These questions cover Sections 1-2 of Keystone Predator. Q5.1. Recall that some species in the intertidal zone are mobile, while others are sessile (stationary), and this affects how individuals compete with each other. Which of the following compete for space on intertidal rocks? Algae and Starfish Mussels, Whelk, and Chiton Algae and Barnacles Whelk and Starfish
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Algae, mussels, barnacles, and chitons are all sessile species that attach themselves to rocks in the intertidal zone. Starfish and whelks, on the other hand, are mobile species that move around the intertidal zone. Secondly, we need to consider which of these Show more…
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Question 1A. Mussels, like the Mytilus californianus, are commonly found in the mid to high zone of the intertidal. As dominant competitors in their ecosystem, they are able to take over space claimed by other sessile organisms like barnacles or even macroalgae. Why are they generally not found higher with the barnacles? Why do they not venture into the low zone? Give at least one reason for each question. Question 1B. Much of intertidal photosynthesizers face special challenges compared to their animal neighbors in regards to the tides: too much time above water, and they risk desiccation; yet too little time above water, and they may not get the sunlight they need to photosynthesize. Give examples of two potential adaptations for algae to live in high intertidal zones, as well as two potential adaptations for living in the lower zones.
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Which of the following compete for space on intertidal rocks? Algae, Mussels, and Whelk Algae and Mussels Whelk and Chiton Starfish only
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Question 3 (1 points total) Fill-in the blanks below based on your observations in lab this week. Be specific in your answers to receive full credit. Organism Phylum Symmetry Development (protostome/ deuterostome/neither) Gut type (1-way/ 2-way / none) Feeding (filter, predator, etc) On the lab practical, how would you visually tell the difference between this animal and a:
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