Arthropod exoskeletons are made of cuticle, a non-cellular material secreted by the epidermis. Their cuticles vary in the details of their structure, but generally consist of three main layers: the epicuticle, a thin outer waxy coat that moisture-proofs the other layers and gives them some protection; the exocuticle, which consists of chitin and chemically hardened proteins; and the ...

As Angiospermas ou angiospérmicas (do grego: angeos (ἄγγος) - "bolsa" e sperma (σπέρμα) - "semente") são plantas espermatófitas cujas sementes são protegidas por uma estrutura denominada fruto.Também conhecidas por magnoliófitas ou antófitas, são o maior e mais moderno grupo de plantas englobando cerca de 250 mil espécies (cerca de 90% de todas as …

Eruca sativa (syn. E. vesicaria subsp. sativa (Miller) Thell., Brassica eruca L.), also known as arugula or rocket, is a plant that can be eaten.It is a leaf vegetable with dark green, spiky, dandelion-like leaves and a strong, spicy, peppery flavor.. Related pages

The sunflower (Helianthus annuus) is a living annual plant in the family Asteraceae, with a large flower head (capitulum).The stem of the flower can grow up to 3 metres tall, with a flower head that can be 30 cm wide. Other types of sunflowers include the California Royal Sunflower, which has a burgundy (red + purple) flower head.. The flower head is actually an inflorescence made …