Each species has a unique set of ecological requirements and roles that is referred to as its ecological ____
a. habitat
b. community
c. requirements
d. necessities
e. niche
e
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Delicate ring forms and crescent-shaped gametocytes are the only forms normally observed in the peripheral blood of which Plasmodium spp.?
a. P. vivax b. P. malariae c. P. falciparum d. P. ovale
As with people, cancer is much more common among dogs that are obese and have low
activity levels. Obesity and activity level are thus considered __________ for cancer in dogs.
a. carcinogens b. risk factors c. indicators d. oncogenes
If asked to point to the place on a diagram where sperm cells are stored, you would place a pointer on the
A. scrotum. B. vas deferens. C. epididymis. D. bulbourethral gland. E. seminal vesicle.
Regions of a stem that give rise to new shoots or roots are called ____
a. ground tissue b. dermal tissue c. cortex cells d. internodes e. nodes