The term actinomorphy is generally used to describe radial symmetry in flowers.
常“辐对”描述辐花。
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But why five-part radial symmetry, specifically?
但为什是五辐辐射对?
Except Ctenoimbricata didn't have radial symmetry.
除了梳状板动没有辐射对。
So how did the ancient ancestors of starfish go from having bilateral symmetry to having radial symmetry?
,海星的远古祖先是如何从具有双侧对性演变成具有辐射对性的?
Or a 5-limbed animal like a starfish—radial symmetry removes many of the limitations that would prevent odd numbers of limbs.
或者像海星样的五肢动——辐射对消除了许多阻碍奇数肢体的限制。
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