Lab quiz 4

Question 1

Inarticulate brachiopods (morphology, mode of life, shell composition, age range)

Answer 1

1. No teeth, held together by diductor, abductor muscle without ductor
2. Infaunal, benthic/sessile
3. Calcium phosphate
4. Cambrian - Now

Question 2

Articulate brachiopods (morphology, mode of life, shell composition, age range)

Answer 2

1. Defined hinge, teeth, diductor muscle
2. Epifaunal, Benthic/Sessile
3. Calcium Carbonate
4. Cambrian - Recent

Question 3

What feature do brachiopods share with bryozoans, and what function does it serve?

Answer 3

Lophophore: serves as a food intake organ, allowing them to eat and breathe.

Question 4

what is the role of zooxanthellae in the success of scleractinids? (2)

Answer 4

Produce oxygen and absorb food

Question 5

What are important morphological features of crinoids (coral)? Be sure to be able to identify them

Answer 5

Holdfast (root), Calyx, Anal tube, Mouth