四面体

The tetrasporophyte wrapped by callose is of simultaneous type.

分面型，被胼胝质壁所包围。

Pollen mother cells undergo meioses through simultaneous cytokinesis and give rise to tetrads of microspores, which are tetrahedrally arranged.

花粉母细胞行减数分裂，细胞质分裂属同时型，小孢子分，为面形。

Ubisch bodies and lipid bodies are found in the glandular tapetums. In meiosis of microsporocyte, cytokinesisis is a simultaneous type, which produces an isobilateral tetrad.

小孢子母细胞减数分裂胞质分裂为同时型,面型分。