Microsporophylls

Definition

Microsporophylls are specialized leaves that bear microsporangia, the structures where pollen grains (microspores) are produced. They are crucial components of male reproductive organs in gymnosperms and some angiosperms.

5 Must Know Facts For Your Next Test

1. Microsporophylls are typically found in male cones of gymnosperms.
2. Each microsporophyll usually bears multiple microsporangia on its surface.
3. Microsporangia undergo meiosis to produce haploid microspores, which develop into pollen grains.
4. In flowering plants, microsporophylls correspond to stamens, specifically the anthers.
5. The development and arrangement of microsporophylls can vary significantly among different plant species.

Review Questions

Related terms

Microsporangium: A structure on a microsporophyll that produces and contains pollen grains through meiosis.

Megasporophyll: A leaf-like structure bearing megasporangia, responsible for producing female gametophytes.

Stamen: The male reproductive organ of a flowering plant, consisting of an anther and a filament.