Glossary - general

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Zig-zag micropyle – the micropyle obtains a zig-zag-shape

Zona-aperturate pollen grain – with a ring-like aperture

Zonasulcate pollen grain – with a ring-like sulcus

Zonizonasulcate pollen grain – with a ring-like sulcus encircling the equator

Zonocolporate pollen grain – with a ring-like compound colpus

Zonosulculate pollen grain – with a ring-like sulculus

Zuleitungsbahn – conducting passage

Zygomorphic – monosymmetrical; with bilateral symmetry; a transversely zygomorphic flower has the plane of symmetry perpendicular to the median plane of the flower; in a split-monosymmetrical flower the corolla appears to be split down one side

Zygote – a diploid cell formed from the fusion of a male and a female gamete during the fertilization