Question

compare the symmetry of Orchid to that in Pentamerous and Tetramerous flowers.

Answer 1

✍ Answer ✍

Trimerous flowers have sepals, petals etc in threes. Many monocots have this type of flower. Iridaceae have three standards and three falls, Hemerocallis have two sets of three petals, Orchids have three sepals and three petals, etc.

Trimerous flowers have sepals, petals etc in threes. Many monocots have this type of flower. Iridaceae have three standards and three falls, Hemerocallis have two sets of three petals, Orchids have three sepals and three petals, etc.Tetramerous flowers have flower parts in fours; Cornus is an example, as are Brassicaceae

Trimerous flowers have sepals, petals etc in threes. Many monocots have this type of flower. Iridaceae have three standards and three falls, Hemerocallis have two sets of three petals, Orchids have three sepals and three petals, etc.Tetramerous flowers have flower parts in fours; Cornus is an example, as are BrassicaceaePentamerous flowers have flower parts in fives: five sepals, 5 petals, five stamens. Solanaceae have this type of flower.

A flower may be trimerous, tetramerous or pentamerous when the floral leaves of each whorl are in multiple of 3, 4 or 5, respectively.

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