The group of Fungi in which sexual reproduction has not been observed is

A. Ascomycetes.
B. Deuteromycetes.
C. Zygomycetes.
D. Basidiomycetes.


B

Biology & Microbiology

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The plant hormone abscisic acid (ABA) is involved in the regulation of photorespiration. Based on this information, ABA likely plays a role in

A. the photoelectric effect. B. cyclic photophosphorylation. C. the opening and closing of stomata. D. noncyclic photophosphorylation.

Biology & Microbiology

The activation of the parasympathetic branch of the autonomic nervous system is associated with _____

A) resting and digesting B) release of epinephrine into the blood C) increased metabolic rate D) intensive aerobic exercise

Biology & Microbiology

Cardiac muscle cells are ____ because a person cannot deliberately make them contract.

A. involuntary B. voluntary C. reflexive D. slow contracting E. smooth

Biology & Microbiology

Suppose that diploid cells of the seminiferous tubules encounter errors during the cell cycle and mitosis. This results in the primary spermatocytes having a 4n number of chromosomes. Assuming that meiosis proceeds normally, which of the following would be true?

A) Sperm cells would have an n number of chromosomes. B) Sperm cells would have a 2n number of chromosomes. C) Secondary spermatocytes would have a 4n number of chromosomes. D) Secondary spermatocytes would have an n number of chromosomes.

Biology & Microbiology