Deer, turkey, wild pigs, and bears also feed heavily on acorns, but do not store them,
(15)And are therefore of no benefit to the trees. Flying squirrels, chipmunks, and mice are
Also unlikely to promote tree dispersal--- whose behavior of caching (hiding) acorns below
The leaf litter often promotes successful germination of acorns --- and perhaps blue jays, Important long-distance dispersers, seem to help oaks spread and reproduce.
46. It can be inferred from paragraph 3 that chipmunks do not aid in the dispersal of oak trees
because
A).they store their acorns where they cannot germinate
B). they consume most of their stored acorns
C). their stored acorns are located and consumed by other species
D). they cannot travel the long distance required for dispersal
答案是A,一个大疑问!!Flying squirrels, chipmunks, and mice are
Also unlikely to promote tree dispersal--- whose behavior of caching (hiding) acorns below
The leaf litter often promotes successful germination of acorns
promotes successful germination of acorns 好象是要发芽吧。答案是they store their acorns where they cannot germinate 也太怪了吧! |