Which of the following is not a feature of a seed?
A. It contains a protective coat formed from the outer layers of ovule cells.
B. The embryo is surrounded by nutritive tissue or has cotyledons that contain nutritive tissue.
C. It contains a large percentage of water to support the embryo.
D. It is a complex structure that allows the embryo to be dispersed to distant sites.
E. Environmental signals such as light or temperature can trigger germination.
C. It contains a large percentage of water to support the embryo.
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What seagoing technology changed the course of navigation methods by providing an accurate means to determine the longitude of a ship?
a. Sextant b. Celestial charts c. Chronometer d. GPS
Which of the characteristic(s) apply to the supergroup Archaeplastida?
A. They include land plants and the green algae, Chlorophyta. B. They contain plastids that originated from endosymbiotic cyanobacteria. C. They include only multicellular organisms that contain plastids. D. They include multicellular and unicellular organisms. E. All of these apply.
Many species of which protist group have modified mitochondria that lack functional electron transport chains?
A) excavates B) rhizarians C) ciliates D) unikonts
Where is the apical foramen of the developing tooth?
A. At the root of the tooth; The blood vessels and nerves enter the pulp here. B. Between adjacent developing teeth; The apical foramen is the gap between adjacent teeth. C. Between the developing tooth and the oral cavity: The apical foramen is the hole through which the tooth will emerge. D. Between the growing mass of dentin and odontoblasts; Dentin is secreted into this foramen by odontoblasts. E. Surrounding it; The apical foramen is the cavity in which the tooth develops.