Twisted aestivation is found in a) Malvaceae b) Asteraceae c) Fabaceae d) Mimosoideae

Twisted aestivation refers to the arrangement of floral structures in a flower bud before it opens. Among the options you've provided:

a) Malvaceae - This family includes plants like hibiscus, cotton, and okra. Some members of Malvaceae may exhibit twisted aestivation.

b) Asteraceae - This family includes plants like sunflowers, daisies, and dandelions. Asteraceae typically do not exhibit twisted aestivation; they often have imbricate (overlapping) or valvate (meeting at the edges without overlapping) aestivation.

c) Fabaceae - This family includes plants like peas, beans, and lentils. Fabaceae typically do not exhibit twisted aestivation; they often have vexillary aestivation, where the largest petal (the "banner" or "standard") covers the inner petals.

d) Mimosoideae - This is a subfamily within the Fabaceae family. Some plants within Mimosoideae might exhibit twisted aestivation, but it's not a defining characteristic of the entire subfamily.

Based on the options you've provided, the most likely answer would be a) Malvaceae, although it's important to note that the occurrence of twisted aestivation can vary within plant families and even among species.