What are the components of the Janzen-Connell hypothesis? Select all correct choices
A. Seeds located close to plants of the parent
generation will have a higher survival rate.
B. Seeds located far away from the parent
generation will have a higher survival rate.
C. Seeds from rare plants will have a higher
survival rate.
D. Seeds from common plants will have a
higher survival rate.
B,C
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Sieve plates:
A. are modified cell walls that connect sieve elements. B. do not contain plasmodesmata. C. dissolve at sieve tube maturity. D. have solid, impermeable surfaces. E. contain mitochondria and chloroplasts.
One effect of decreasing wolf populations in North America is
A) decreased deer populations. B) range expansion for coyotes. C) range retraction for elk. D) increased bear populations.
Bryophytes, like club mosses and certain other tracheophyte plants, require
A. soil to reproduce sexually. B. shade to reproduce sexually. C. water to reproduce sexually. D. sunlight to reproduce sexually. E. air to reproduce sexually.
Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?
A. ATP synthase B. Phospholipidase C. DNA polymerase D. Chitin E. Rubisco