Definition
orthotropous
adjective
- (of a plant ovule) having the micropyle and chalaza at opposite ends, with the funicle attached at one end; straight and upright.
Usage: botany; technical
Examples
- The orthotropous ovule develops with its axis aligned straight along the funicle.
- In orthotropous seeds, the micropyle points directly away from the point of attachment.
- Botanists classify ovules as orthotropous, anatropous, or campylotropous based on their orientation.
- The orthotropous condition is less common than anatropous ovules in flowering plants.