Qn:1)the size of a male cycad cone is directly influences..
Answer is in the 11th line of the passage...
"Still, many male cycad cones are comparatively small and thus produce far less pollen"
Size propotional to amount of pollen
Correct Ans:(E) The amount of pollen produced by the male cone
Qn:2) Which is true of the structure of cycad cones?
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.
Answer is in the 6th line of the passage...
The structure of cycads male cones is quite consistent with the wind dispersal...
Answer is in the 12th line of the passage...
Furthermore, the structure of most female cycad cones seems inconsistent...
Correct Ans:(E)The structure of male cycad cones is consistent....
Qn:3)in favor of insect pollination of cycads presented in lines 2-4 would be more convincing if which..
Line:1 ... insects can function as pollinators of cycads...
Furthermore, cycads removed from native habitats ( therefore from insects) ..are usually infertile...
(A) Only a small variety of cycad species can be successfully transplanted. -> Wrong, because it speaks about small varities of cycads
(B) Cycads can sometimes be pollinated by means other than wind or insects. -> Wrong, because cycads removed from native habitats are usually infertile
(C) Insects indigenous to regions to which cycads are transplanted sometimes feed on cycads.-> Wrong, if insects eats cycads, their fertilization will be affected
(D) Winds in the areas to which cycads are usually transplanted are similar to winds in cycads’ native habitats.-> Wrong, if Ans D is true,
we won't be able to distinguish whether fertilization happens through wind or insects
(E) The transplantation of cycads from one region to another usually involves the accidental removal and introduction of insects as well.->Correct Ans:(E) Because, All other Answers are definitely wrong...
Qn:4)following is true of scientific investigations of cycad pollination?
(A) They have not yet produced any systematic evidence of wind pollination in cycads. -> Wrong,In Para Line No 9, Male sheds sheds almost 100 cubic centimeters of pollen, which is probably dispersed by wind...
(B) They have so far confirmed anecdotal reports concerning the wind pollination of cycads.-> Wrong,In Para Line No 5, anecdotal reports of wind pollination in cycads cannot be ignored.
(C) They have, until recently, produced little evidence in favor of insect pollination in cycads.-> Wrong,In Para Line No 4,cycads removed from native habitats ( therefore from insects) ..are usually infertile...
(D) They have primarily been carried out using cycads transplanted from their native habitats.-> Correct, Furthermore, cycads removed from their native habitats became infertile..
(E) They have usually concentrated on describing the physical characteristics of the cycad reproductive system.-> Wrong , The structure of cycads male cones is quite consistent with the wind dispersal..