From which generation does the pollen grain develop?
a. from the female gametophyte
b. from the female sporophyte
c. from the male sporophyte
d. from the male gametophyte
Ans: d. from the male gametophyte
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A young person suffered a head injury that damaged her pituitary. As this person got older, what condition was the only thing that she and her doctors found that was unaffected by the injury?
A) growth B) menstrual cycle C) production of breast milk D) blood sugar level
A filter feeder is an animal that:a
has well-developed teeth for stabbing prey. b. secretes paralyzing venom suspended in saliva. c. has a symbiotic relationship with its host. d. entraps food particles from water. e. feeds on nectar while suspended in air.
An isotope is an atom of an element that varies in mass number due to variation in the number of
A. atoms. B. protons. C. neutrons. D. electrons.
Chyme travels from the stomach to which specific structure?
A) jejunum B) pancreas C) duodenum D) large intestine