Structure of a leaf is complementry to its function. explain please....?

Answer 1

Well, I'd say that different leaves function differently on different plants. Like, say, a succulent leaf (like a sedum, "hens-and-chicks" plant, a jade plant, something like that) stores water for dry times. Needles, like on cacti, are tiny and usually dry so that they don't release water to the air (but if there is excess water, they grow to "leaf" size so the plant doesn't rot or anything.) A mimosa leaf (sensitive plant, in Fabaceae, the pea family) closes up at night or when you touch it (some varieties.) This discourages predation since pea family plants usually taste good and get eaten. It makes the leaf smaller and harder to munch and much less conspicuous. Some plants have waxy coatings on their leaves to reduce water loss.

All leaves kinda do the same thing: catch light and convert it to energy via chlorophyll (or whatever they use--they're not all green) and transpire extra moisture (sometimes they also absorb nutrients that drip on them) but leaves have other differences that make them better suited to individual plants.

Answer 2

It's function is to exchange CO2 and O2 but it's surface is mostly impermeable for any gas. Otherwise it would lose too much H2O.

So it's alway a balancing act between dehydrating or suffocating...

Answer 3

And its flat and thin to gather light for photosynthesis.