Suppose that you discover a fungus that is associated with plant roots, with hyphae that actually penetrate the root cells, and it produces tree-like structures within the root cells. Into which group should you classify this fungus?
a. Chytridiomycota
b. Basidiomycota
c. Zygomycota
d. Glomeromycota
Ans: d. Glomeromycota
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Which of the following is(are) an organism’s niche?
a. living and environmental factors b. its general ecological role c. the organism’s relationship with other living organisms d. All of these constitute part of an organism’s niche
The F factor contains genes that encode____
a. lipids of the cytoplasmic bridge b. receptor proteins on the recipient cell c. bacteriophages d. DNA polymerase for plasmid DNA replication e. proteins of the sex pilus
In ponds and lakes, the zone beneath the depth of effective light penetration but above the bottom is referred to as the
A) littoral zone. B) limnetic zone. C) profundal zone. D) benthic zone.
What are the main roles of testosterone in males?
a. Stimulates spermatogenesis b. Formation of external genitalia c. Development of secondary sex characteristics d. All of the above