Which of the following structures is unique to a monocot seed?
a. seed coat
b. endosperm
c. cotyledon
d. coleoptile
e. hypocotyl
ANSWER: d
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Which of the following explains why Mendel used the garden pea as his model system?
a. The plant rarely produces offspring that looks like the parent. b. The plant did not require Mendel to perform hybridizations. c. The plant had been used by Mendel in previous experiments. d. The plant has flowers that close securely during self-pollination.
Place the following digestive structures of an Annelid in the proper order
a. mouth ? esophagus ? crop ? gizzard ? intestine ? anus b. mouth ? esophagus ? intestine ? crop ? gizzard ? anus c. mouth ? esophagus ? gizzard ? crop ? intestine ? anus d. mouth ? esophagus ? crop ? intestine ? gizzard ? anus e. mouth ? esophagus ? intestine ? gizzard ? crop ? anus
The eardrum is directly connected to the ____
a. cochlea b. malleus c. tympanic membrane d. round window e. stapes
Sponges feed differently than comb jellies because a sponge feeds by
A. the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge. B. squeezing the spongocoel cavity and sucking debris in and out through the osculum. C. the beating of collar cells' flagellae, which form a current; the current brings food particles which are engulfed and digested by collar cells. D. acting as a net in a current that sweeps food particles into its central cavity and digests them externally.