Vesicles and arbuscules are structures typically formed ________
A) in bacterial cells when attacked by protozoa.
B) in root cells by fungi when they form mycorrhizae
C) above ground by certain soil fungi
D) by mesofauna when they incorporate organic materials into the soil
E) none of the above
B
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Technician A says that biodiesel has a short shelf life compared with petroleum sourced diesel fuel. Technician B says that degraded biodiesel can result in costly fuel problems. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
The term ____________________ refers to the activity of the sperm
Fill in the blank(s) with correct word
A fertile queen may lay as many as _____ eggs per day
a. 1,500 c. 10,000 b. 3,000 d. 200,000
Portuguese efforts to explore and map the western African coastline in the fifteenth century were led by
a. King João. b. Prince Dom Henrique. c. Vasco da Gama. d. King Duarte.