mericarp
Học thuậtThân thiện
Definition
Noun: 1. A dry, indehiscent fruit that develops from one carpel of a schizocarp, splitting away at maturity as one of two or more one-seeded segments. In botany, a mericarp is a single-seeded segment or unit that results when a compound ovary (a schizocarp) splits apart. Each mericarp is derived from one carpel.
Usage
- The term is used specifically in botanical contexts to describe the structure of fruits in certain plant families, such as Apiaceae (carrot family) and Lamiaceae (mint family).
- It refers to the individual, often ridged or winged, one-seeded units that separate from the whole fruit.
Examples
- After flowering, the fruit of the maple tree separates into two winged mericarps.
- Botanists collected the mericarps from the wild parsley plant for study.
- Each mericarp of a dill plant contains a single seed.
Advanced Usage
- Functional Mericarp: In some species, the mericarp's shape aids in dispersal by wind or animals.
- Morphological Study: The surface pattern (e.g., ridges, spines) of a mericarp is often a key characteristic for identifying plant species.
Variants and Related Words
- Schizocarp (noun): The dry compound fruit from which mericarps split. (e.g., The entire fruit is a schizocarp that divides into two mericarps.)
- Carpel (noun): The female reproductive organ of a flower, which develops into a fruit or part of a fruit.
- Achene (noun): A simple, dry, one-seeded fruit that does not split open. A mericarp is structurally similar to an achene but originates from a schizocarp.
Synonyms
- Seed vessel (general)
- Fruitlet (general, though often implies a small part of an aggregate fruit)
- Carpophore (specifically the stalk that bears the mericarps in some plants)
Notes on Different Meanings
The word "mericarp" has a single, precise meaning in botanical terminology. It does not have common idiomatic or figurative uses. Its usage is strictly scientific.
Noun
- a carpel with one seed; one of a pair split apart at maturity