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Posted in it's literally just biology Posted 5 years ago

Large leaf species live in wet habitats, while small ones live in dry/cold environments (water is scarce, so need to reduce evaporation)

Posted in it's literally just biology Posted 5 years ago

Only a finite amount of energy to devote to shoot growth or branching → diversity

Posted in it's literally just biology Posted 5 years ago

Branching enables plants to efficiently harvest sunlight for photosynthesis

Posted in it's literally just biology Posted 5 years ago

Tall plants require thick stems for greater vascular flow and support (woody plants become thicker via secondary growth) - avoids shading from other plants

Posted in it's literally just biology Posted 5 years ago

Length and branching patterns affect light capture

Posted in it's literally just biology Posted 5 years ago

Stems - support for leaves and transport of water/nutrients

Posted in it's literally just biology Posted 5 years ago

Tall shoots required efficient long-distance transport of water/minerals/photosynthates → xylem + phloem

Posted in it's literally just biology Posted 5 years ago

Tall plants w/ broad leaves for absorbing light and stomata for diffusion of CO2 → greater loss of water → need multicellular, branching roots for water absorption

Posted in it's literally just biology Posted 5 years ago

Early nonvascular land plants had leafless photosynthetic shoots and were anchored by rhizoids

Posted in it's literally just biology Posted 5 years ago

Algal ancestors of land plants absorbed water/nutrients/CO2 from the water in which they lived

Posted in it's literally just biology Posted 5 years ago

Next chapter..... more plants..........

Posted in it's literally just biology Posted 5 years ago

A inhibits C and vice versa. If A or C is missing, the other takes its place

Posted in it's literally just biology Posted 5 years ago

Each class of organ identity genes is switched on in 2 specific whorls of the floral meristem

Posted in it's literally just biology Posted 5 years ago

ABC hypothesis - 3 classes of genes direct the formation of the 4 types of floral organs