Water loss-desiccation of both adult and embryonic structure

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Out of these 6 choices, which one relates to plant size and plant thickness, and how?

1) Cellular damage from increased UV light
2) Water loss/desiccation of both adult and embryonic structures
3) Gas exchange without excessive water loss
4) Access to nutrients and a means to distribute them
5) Structural support for growth
6) Reproduction without water, which is required for motile sperm

Reference no: EM13527855

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