Pseudofruits and parthenocarpic fruits

Pseudofruits and parthenocarpic fruits

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In pseudo-fruits, the edible portion does not correspond to the developed ovary.

In cashews, floral peduncle hypertrophy occurs. In apple, pear and strawberry, it is the floral receptacle that develops.

Thus, by eating the pulp of an avocado or mango, you are feeding on the true fruit. However, when savoring a cashew apple or an apple, you are chewing the pseudo fruit.

In the case of banana and navel orange (baiana), the fruit is parthenocarpal, corresponds to the ovary developed without fertilization, therefore without seeds.

Seed Origin and Structure

THE seed It is the modified and developed egg. Every seed has a more or less rigid wrap, an inactive embryo of the future plant, and a food reserve material called endosperm or albumen.
Under favorable environmental conditions, especially humidity, seed hydration occurs and germination can be initiated.

The cotyledons

The whole embryo contained in an angiosperm seed is an axis formed by two ends:

  • THE radicle, which is the first structure to emerge when the embryo germinates, and
  • O stem, responsible for the formation of the first embryonic leaves.

An embryonic "leaf" deserves special attention. It is the cotyledon. Some angiosperms have two cotyledons, others have only one. Plants that have two cotyledons are called eudicotyledons and plants that have a cotyledon are called monocotyledons. Cotyledons are inserted into the stem, which will give rise to the stem.