Which of the following statements about spores is incorrect?
A. Both sexual and asexual spores are
produced by meiosis.
B. Both sexual and asexual spores allow for
dispersal to new areas.
C. Asexual spores are genetically identical to
the parent, whereas sexual spores are not.
D. Fungal species vary in their reliance on
asexual versus sexual spore production.
E. Spore production is triggered in part by a
shortage of resources.
A
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Which one of the following is the function of horizontal cells in the eye?
A. They transmit signals from rods and cones to the optic nerve. B. They receive signals from multiple photoreceptors (rods and cones), integrating and regulating their input. C. They communicate between and among bipolar cells. D. They process of visual input to actually form an image.
The direction of blood flow is indicated by
a. A. b. B. c. C. d. D. e. E.
Metagenomic analysis involves
A) culturing microbes isolated from the environment. B) extracting DNA from cultured microbes. C) analyzing DNA from environmental samples. D) sequencing cloned DNA individually. E) determining culture conditions for different microbes.
A group of plant geneticists discovers a mutant plant that has a deficiency in gibberellin production
All other hormones, including auxins, cytokinins, florigens, ethylene, and abscisic acid, are produced in normal quantities and are not directly affected by this mutation. Based on this scenario, the mutant plant most likely exhibits A) stomata that don't close. B) a lack of gravitropism in the roots. C) a lack of phototropism in the shoots. D) a dwarf growth pattern (very short stem). E) delayed senescence.