page_title: Glossary of botanical terms
section_title: Z
hierarchical_section_title: Glossary of botanical terms / Z
caption_attribution_description: Pelargonium ×zonale hort.
context_page_description: This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology.
context_section_description: zonate
  Having light and dark circular bands or rings, typically on leaves or flowers.
  zygomorphic
  Bilaterally symmetrical; symmetrical about one vertical plane only; applies to flowers in which the perianth segments within each whorl vary in size and shape. Contrast actinomorphic and irregular.
  zygote
  A fertilized cell, the product of fusion of two gametes.
caption: Zonate markings on the leaves of a garden variety of Pelargonium zonale
exif: {"Image Make": "FUJIFILM", "Image Model": "FinePix S5500", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Digital Camera FinePix S5500   Ver1.00", "Image DateTime": "2005:05:30 12:30:43", "Image YCbCrPositioning": "Co-sited", "Image Copyright": "", "Image ExifOffset": "294", "Image PrintIM": "[80, 114, 105, 110, 116, 73, 77, 0, 48, 50, 53, 48, 0, 0, 2, 0, 2, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail Orientation": "Horizontal (normal)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1306", "Thumbnail JPEGInterchangeFormatLength": "7868", "Thumbnail YCbCrPositioning": "Co-sited", "EXIF ExposureTime": "1/420", "EXIF FNumber": "29/10", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2005:05:30 12:30:43", "EXIF DateTimeDigitized": "2005:05:30 12:30:43", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "4", "EXIF ShutterSpeedValue": "87/10", "EXIF ApertureValue": "31/10", "EXIF BrightnessValue": "593/100", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "3", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "42/5", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "1280", "EXIF ExifImageLength": "961", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "1158", "EXIF FocalPlaneXResolution": "4255", "EXIF FocalPlaneYResolution": "4255", "EXIF FocalPlaneResolutionUnit": "3", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF Sharpness": "Normal", "EXIF SubjectDistanceRange": "0"}