Gymnosperms and Their Characteristics
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Vocabulary flashcards covering key concepts related to gymnosperms, their reproduction, and characteristics.
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20 Terms
Gymnosperm
A group of seed-producing plants with exposed seeds, meaning they have 'naked seeds'.
Progymnosperms
Early forest ancestors of modern gymnosperms that arose approximately 350 million years ago.
Dioecious
A term describing species that have distinct male and female individual organisms.
Cantharophily
Pollination by beetles, specifically weevils.
Ginkgo biloba
The last surviving species of a once diverse group of gymnosperms, often referred to as a living fossil.
Conifers
The most diverse lineage of modern gymnosperms, with over 500 species in 50 genera.
Microsporangium
A structure found on pollen cones where microspores develop, leading to the production of pollen.
Megasporangium
A structure found on seed or ovule cones where megaspores develop, leading to the formation of ovules.
Vascular cambium
A layer in plants responsible for the production of new vascular tissue, which is critical for growth.
Sarcotesta
The outer fleshy layer of a seed surrounding the hard inner seed coat.
Gymnosperm
A group of seed-producing plants with exposed seeds, meaning they have 'naked seeds'.
Progymnosperms
Early forest ancestors of modern gymnosperms that arose approximately 350 million years ago.
Dioecious
A term describing species that have distinct male and female individual organisms.
Cantharophily
Pollination by beetles, specifically weevils.
Ginkgo biloba
The last surviving species of a once diverse group of gymnosperms, often referred to as a living fossil.
Conifers
The most diverse lineage of modern gymnosperms, with over 500 species in 50 genera.
Microsporangium
A structure found on pollen cones where microspores develop, leading to the production of pollen.
Megasporangium
A structure found on seed or ovule cones where megaspores develop, leading to the formation of ovules.
Vascular cambium
A layer in plants responsible for the production of new vascular tissue, which is critical for growth.
Sarcotesta
The outer fleshy layer of a seed surrounding the hard inner seed coat.