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microsporophyll

microsporophyll

9.9
A leaf in plants without flowers that holds pollen sacs
  • noun
  • /ˌmaɪkrəˈspɔrəˌfɪl/
  • Specialized
translation icon : microsporófilo
  • Each microsporophyll typically supports two microsporangia in a male pine cone.

Examples

  • The pollen cones of conifers contain many microsporophylls arranged in spirals.

  • In cycads, the microsporophylls are packed densely around the axis of the cone.

  • The microsporophyll is crucial for the reproduction of certain plants.

  • In ferns, the microsporophyll produces microspores that develop into gametophytes.

  • Each microsporophyll supports two microsporangia in a male pine cone, facilitating pollen production.

  • In cycads, the densely packed microsporophylls surround the axis of the cone, playing a key role in reproduction.

  • The pollen cones of conifers are composed of many microsporophylls arranged in spirals, essential for producing microspores.

Synonyms

sporophyll
vsmicrosporophyll
  • Specialized
9.9

A leaf-like part that holds spore-producing structures on ferns, mosses, and some seed plants

bears only microsporangia rather than all sporangia
sporophore
vsmicrosporophyll
  • Specialized
9.9

A part of a plant or fungus that makes tiny spores that grow into new living things

is a leaf that bears only microsporangia not a general spore-bearing branch

How Specialized

microsporophyll
  • Specialized
9.9
sporophyll
  • Specialized
9.9
leaf
178 1.0

Surface Forms

Morphology

microsporophyll = sporophyll (semi-transparent) = micro + spor + phyll

The formation is regular in botanical terminology, but the specialized meaning is not obvious to general learners.

Etymology

Microsporophyll breaks into micro- 'small', sporo- 'spore' meaning a tiny reproductive part, and -phyll 'leaf', as in chlorophyll. So a microsporophyll is a 'small spore leaf', which explains why it is a leaf that bears microspores.