Bio 2 Exam 3 Book Q's

Trochophore larvae are characteristic of what?

Mollusks

Collar cells (choanocytes) are characteristic of what?

Poriferans

Which of the following is NOT an adaptation to parasitic life ? a. production of a few well- protected eggs b. hooks c. suckers d. reduced digestive system e. intermediate host

a. production of a few well-protected eggs

Which of the following is NOT characteristic of arthropods? a. exoskeleton b. pseudocoelom c. paired, jointed appendages d. chitin e. segmentation

b. pseudocoelom

Which of the following is associated with the evolution of the coelom? a. radial symmetry b. tube-within-a-tube body plan c. incomplete metamorphosis d. bilateral symmetry e. development of ganglia

b. tube-within-a-tube body plan

Cnidocytes... a. are characteristic of sponges b. are found among cells lining the gastrovascular cavity c. contain stinging organelles d. are lined with mesoderm e. have two main shapes

c. contain stinging organelles

Trilobites... a. were early mollusks b. are onychophorans c. are characterized by parapodia and setae d. were early arthropods e. are an evolutionary link between annelids and arthropods

d. were early arthropods

An open circulatory system... a. is characteristic of squids and other active mollusks b. permits contracting muscles to recover quickly c. has no blood vessels d. is a unique characteristic of annelids e. has hemolymph, which bathes tissues directly

e. has hemolymph, which bathes tissues directly

Which of the following is characteristic of insects? a. biramous appendages b. two pairs of antennae c. chelicerae d. eight legs e. mandibles

e. mandibles

The correct sequence of complete metamorphosis of an insect is what?

egg ---> larva ------> pupa ------> adult

Which of the following characteristics is associated with mollusks?

mantle