Ginkgo and cynads have broad leaves?

whereas those of pines are needle like.Can anybody suggest any significance of this in term of the climates and habitats involved?

Ginkgo and cynads have broad leaves?
Well, if you think about it, your environment shapes the physical demands of a structure (be it animal or plant).





Ginkgos are in warmer climates, therefore, they can afford to have broad leaves for a lot of gas exchange and water movement.


However, the pines or conifers tend to live in much colder climates, where it would be dangerous to have broad leaves.


Not only would having broad leaves be disadvantageous, but it would be fatal to the plant in such low temperatures.





The Xylem in a plant that carries the water throughout the tree also carries water throughout the leaves. If pines had larger leaves, there would be much more water content, and a larger chance of freezing. Pines use small needles in order to sustain themselves in colder weather where broad leaves would just die.



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