Which variety of plant has a noticeable sporophyte?
a. hornwort
b. liverwort
c. bryophyte
d. horsetail
a. hornwort
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Chickenpox, caused by a herpesvirus, results in a systemic papular rash that quickly heals
Indicate whether the statement is true or false.
Anaerobic organisms live in ____ areas
a. nitrogen-free. b. oxygen-rich. c. oxygen-free. d. hydrogen-free. e. carbon-free.
The procedure by which embryos produced during in vitro fertilization are tested for defects is called
a. chorionic villus sampling. b. preimplantation diagnosis. c. amniocentesis. d. fetoscopy. e. senescence.
Tawny owls (Strix aluco) pair-bond for life, with both members of a pair living and hunting in
adjacent, well-defined territories. Their reproduction is regulated in accordance with the resources, especially the food supply, present in their territories. Tawny owls can best described as: a. r strategists. b. K strategists. c. fecundists. d. life historists. e. scramblers