|
EXAMINATION
& EXERCISES #2
For
Invertebrate Zoology: Nemertinea --
Echinodermata
(Contact)
|
[For
answers please also refer to:
Borradaile, L. A. & F. A. Potts. 1958. The
Invertebrata. Cambridge Univ.
Press. 795 pp. and Pechenik J.
A. 2004. Biology of The Invertebrates. 5th edition. Boston: McGraw-Hill Higher Education]
|
_ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _
1. Compare Ascaris and Macracanthorhynchus
as to:
(A)
body wall, (B) body cavity, (C) digestive system, (D) excretory system.
(E) life cycle
2. Compare the starfish sea urchin
and sea cucumber as to:
(A)
general body plan, (B) arrangement of oss1cles, (C) number and location
of genital openings, (D)
feeding mechanism, (E) larval
type.
3. Compare the freshwater clam, land snail and squid, as to:
(A)
shell, (B) foot, (C) respiratory structures, (D) feeding apparatus, (E)
larval stage.
4. Answer the following as precisely
as possible:
(A) What 2 advances in the
circulatory system does the squid show, by comparison with other
mollusks?
(B) What histological
peculiarity 1s common to the Nematodes, Rotifers and Acanthocephala'?
(C) What
specialization for over~w1ntering is found in (1) freshwater Bryozoa, (2)
Rotifers?
(D) What is the function of
the nidamental gland?
(E) Name a sessile
echinoderm.
(F) Name a sessile mollusk.
(G) Name a cephalopod (1)
with no shell, and (2) with a well developed shell.
(H) Name a class of mollusks
with a tubular shell open at both ends.
(I) Name a class of mollusks
with an 8-piece shell
(J) Name three phyla, in addition to the Platyhelminthes, that have
flame cells.
(K) What external morphological feature 1s common to the Bryozoa,
Brachiopoda and Phoronidea?
(L) What is the evidence that
Echinoderms have evolved from bilateral ancestors?
(M) Aside from the coiling of the shell
and its contents, what indications are there in a snail such as Busycon, of
the torsion
of the body? Give three.
Bibliography Citations
|