hordeum vulgare and oryza sativa is monocieous or dioecious and explain it?
Answers
Answer:
here it is
Explanation:
It is convenient to describe grass taxa as being unisexual or bisexual, but this oversimplifies the variation in sex expression, and indeed almost all possible breeding systems can be found in the grasses (Connor, 1981; Chapman, 1990; Watson & Dallwitz, 1992). Dioecy (staminate and pistillate flowers on separate plants) occurs in subfamilies Chloridoideae, Pooideae, and Danthonioideae; in the latter two subfamilies it is often associated with apomixis. Monoecy also occurs, with the most familiar example being maize (Zea mays). Among monoecious species, the staminate and pistillate flowers may be borne in separate inflorescences (e.g. maize), in separate spikelets in the same inflorescence (e.g. Pharoideae, tribe Olyreae in the Bambusoideae, and Tripsacum, Coix, and Heteropogon in Panicoideae), or in separate flowers in the same spikelet (e.g. Ixophorus unisetus). Other grasses are andromonoecious, with bisexual and staminate flowers in the same spikelet (e.g. most members of Panicoideae). Gynomonoecy, with bisexual and pistillate flowers in the same spikelet, occurs sporadically among the grasses (Connor, 1981); generally spikelets contain multiple flowers, the lower of which are bisexual and the upper of which often produce only a gynoecium.