Asexual fungal spores that are not enclosed within a spore-bearing sac, but form from a special fertile hypha are called _______.
A) Sporangiospores
B) Condia
C) Zygospore
D) Ascospore
E) Basidiospore
B) Condia
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Use the following information to answer the following question(s): You wake up one morning feeling slightly under the weather. A close family member enthusiastically suggests that you take some Echinacea, an herb commonly used as a cold remedy. You then decide to design an experiment to test Echinacea and see if this claim is true. You think, "If taken at the beginning of a cold, Echinacea will reduce cold symptoms."If you give 100 sick people tablets similar to Echinacea but with no herb (called a placebo), and do not tell them whether they are receiving the placebo or the Echinacea tablet, what kind of control would this be?
A. A positive control, since you are expecting a change to happen in this control group B. A blind control, since the sick people do not know whether they are receiving the placebo or the Echinacea C. A negative control, since you are expecting no change to happen in this control group D. Both B and C are correct
Which of the following is TRUE of xylem?
a. It conducts water downward in the plant. b. It transports food upward in the plant. c. It transports minerals and water throughout the plant. d. It transports material from stem to leaf. e. It supports the plant stem.
Which of the following is NOT one of the "Big Five" mass extinctions?
A) End-Permian (251 Ma) B) End-Triassic (200 Ma) C) Late Devonian (about 360 Ma) D) Eocene-Oligocene (33.9 Ma) E) Terminal Ordovician (444 Ma)
Helium is an inert gas that rarely reacts with other elements because it has the maximum number of valence electrons in its outer shell.
Answer the following statement true (T) or false (F)