Polyploidy as mechanism of speciation occurs most commonly in which of the following?
a) fungi
b) plants
c) sponges
d) polychaete worms
e) molluscs
Answer: b) plants
Biology & Microbiology
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The oocyte of a human female is usually fertilized in the
A) Ovary B) Vagina C) Uterus D) Oviduct E) Cervix
Biology & Microbiology
After a B cell is activated, it no longer needs T cell interactions or cytokines to make antibody
Indicate whether the statement is true or false.
Biology & Microbiology
The process illustrated in the accompanying figure is known as:
a. humus formation. b. weathering. c. cation exchange. d. soil erosion. e. salinization.
Biology & Microbiology
Which organ secretes estrogen, which stimulates development of secondary sex characteristics in females?
A. ovary B. pancreas C. adrenal cortex D. parathyroid glands E. adrenal medulla
Biology & Microbiology