jtotheizzoe: How Do Plants Know Which Way Is Up And Which Way Is Down? Radiolab and NPR’s Robert Krulwich looks into how plants tell their up from down and how they know which way to grow. We’ve got our inner ear to orient our bodies, but plants aren’t so lucky. They’ve likely got to rely on gravity-sensing molecular structures. Robert can tell you the rest … (via Krulwich Wonders…)

jtotheizzoe:

How Do Plants Know Which Way Is Up And Which Way Is Down?

Radiolab and NPR’s Robert Krulwich looks into how plants tell their up from down and how they know which way to grow. We’ve got our inner ear to orient our bodies, but plants aren’t so lucky. They’ve likely got to rely on gravity-sensing molecular structures. Robert can tell you the rest …

(via Krulwich Wonders…)


131 notes
tagged as: science. earth.
reblogged from thescienceofreality
originally posted by jtotheizzoe
posted on June 24, 2012

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    Why is that elf grabbing his junk?
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    Tropisms. Roots grow down because of geotropism (or gravitropism) and hydrotropismand the shoot grows up because of...
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Source: NPR