Experiments show that insects can function as pollinators of cycads, rare, palmlike tropical plants. Furthermore, cycads removed from their native habitats— and therefore from insects native to those habitats— are usually infertile. Nevertheless, anecdotal reports of wind pollination in cycads cannot be ignored. The structure of cycads male cones is quite consistent with the wind dispersal of pollen, clouds of which are released from some of the larger cones. The male cone of Cycas circinalis, for example, sheds almost 100 cubic centimeters of pollen, most of which is probably dispersed by wind. Still, many male cycad cones are comparatively small and thus produce far less pollen. Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind. Only in the Cycas genus are the females' ovules accessible to airborne pollen, since only in this genus are the ovules surrounded by a loose aggregation of megasporophylls rather than by a tight cone.
=> 해당 지문을 정확히 파악하지 못해서 몇 가지 질문을 드립니다.
* 먼저 지문에서는 pollination의 방식으로는, (1) insect, (2) wind가가 소개되어있는 것이고, insect pollination이 효과적이라는 이야기를 하려는걸까요?
* 구체적으로 "wind pollination"의 경우에는 cycads male cones의 경우에는 consistent하지만(그렇지만 small, produce less pollen의 문제가 있음), female cycads cones에서는 inconsistent하기 때문에 unsystematic하다고 생각해볼 수 있는건가요?
관련해서 지문에 대한 두 가지 질문도 같이 첨부합니다.
# 17 . The evidence in favor of insect pollination of cycads presented in lines 2-4 would be more convincing if which of the following were also true? (답: d)
(A) Only a small variety of cycad species can be successfully transplanted.
(B) Cycads can sometimes be pollinated by means other than wind or insects.
(C) Insects indigenous to regions to which cycads are transplanted sometimes feed on cycads.
(D) Winds in the areas to which cycads are usually transplanted are similar to winds in cycads' native habitats.
(E) The transplantation of cycads from one region to another usually involves the accidental removal and introduction of insects as well.
# 18. The passage suggests that which of the following is true of scientific investigations of cycad pollination? (답: a)
(A) They have not yet produced any systematic evidence of wind pollination in cycads.
(B) They have so far confirmed anecdotal reports concerning the wind pollination of cycads.
(C) They have, until recently, produced little evidence in favor of insect pollination in cycads.
(D) They have primarily been carried out using cycads transplanted from their native habitats.
(E) They have usually concentrated on describing the physical characteristics of the cycad reproductive system.
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