Is the correct answer C? If not, what is the correct answer and why At the trans

Question

Is the correct answer C? If not, what is the correct answer and why

At the transition from mosses to ferns as the major group of land plants, we see, for the first time, the appearance of fossil forests populated by large, woody "tree ferns." Mosses cannot make a tall tree form, whereas ferns can make trees, because ferns are vascularized and generate lignin in their cell walls as well as cellulose. mosses didn't care to grow tall. vascularized mosses are adapted to grow horizontally, not vertically. ferns are vascularized and more efficient at making cellulose cell walls.

Explanation / Answer

At transition from aquatic to land life plants needed to prevent drying out . For this they evolved vascular tissue

They also needed tough cell walls to survive in harsh conditions. So lignin and cellulose came into play.

Thus correct choice should be

ferns are vascularized and generate lignin in their cell walls as well as cellulose.

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