Eukaryotes - Animals Flashcards
What is a characteristic of animals that separates them from the other groups? Think about how animals are different from protists, fungi, and plants.
No cell walls
What is a characteristic of a multicellular organism that is different from a colony?
Have specialized, interdependent cells working together, while in a colony, the cells are mostly independent.
What are two mechanisms that sponges use for feeding?
Filter feeders; trap larger animals, paralyze, and then consume them
What are the two body designs of the jellyfish?
Medusa (typical jellyfish), Polyp (sea anemone)
How are these body designs the same? How are they different?
Both have tentacles
Medusa: motile, sac
Polyp: sessile, attached to substrate
How can jellyfish capture prey much bigger than themselves?
Paralyze
What is the mouth/anus on the jellyfish?
Same opening; centre of body
Do the segmented worms have the same internal and external structures in each segment? How might this be an advantage?
Repeating body segments, useful for regeneration if chopped
What is a physical characteristic of many of the molluscs?
Some are shelled
Why is having a distinct head region an advantage for animals?
Allows for the centralization of sensory organs and brain activity, which enhances an animal’s ability to detect, process, and respond to stimuli more efficiently.
What is an example of an aquatic mollusc?
Clam
What is an example of a terrestrial mollusc?
Snail
Arthropods are segmented, but in a different way than segmented worms. How are arthropod segments different?
Exoskeleton; each segment is different and has unique function. E.g., lobster (tail: swimming, claw: gripping)
Thinking back to Lab 3, what is one insect that you recall and what do you remember about it?
Grasshopers.
What kind of symmetry do the echinoderms have? What does this mean?
Radial symmetry; have many tubed feet
