The term used to describe bacteria that are rod-shaped is ________.
A. coccus
B. bacillus
C. vibrio
D. coccobacillus
Answer: B
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The “naked” seeds of conifers develop ____
a. on scales of the ovulate cones b. on scales of pollen cones c. in microsporangia of pollen cones d. in archegonia of ovulate cones e. in antheridia of pollen cones
__________, products of master genes, act as long-range signals that diffuse out from a source and form a
concentration gradient. Fill in the blank(s) with the appropriate word(s).
Which of the following statements regarding cross-breeding and hybridization is false?
A) The offspring of two different varieties are called hybrids. B) The parental plants of a cross are the P generation. C) The hybrid offspring of a cross are the P1 generation. D) The hybrid offspring of an F1 cross are the F2 generation.
The microscope field that appears as a circle when viewing a slide through the ocular and objective lenses is