Monocots in a sentence

Among the rest, the relationship between the three broadest of these groups (magnoliids, monocots, and eudicots) remains unclear.

Because palms separated from the monocots earlier than other families, they developed more intrafamilial specialization and diversity.

By 1846, in his final schemesfn Lindley had greatly expanded and refined the treatment of the monocots, introducing both an intermediate ranking (Alliances) and tribes within orders (i.e. families).

By tracing back these diverse characteristics of palms to the basic structures of monocots, palms may be valuable in studying monocot evolution.

Dactylorhiza sambucina, Orchidoideae for reference The orchid flower, like most flowers of monocots, has two whorls of sterile elements.

From an economic point of view, the order Asparagales is second in importance within the monocots to the order Poales (which includes grasses and cereals ).

Historically, this feature was used to contrast the monocots with the dicotyledons or dicots which typically have two cotyledons; however modern research has shown that the dicots are not a natural group.

However, molecular phylogenetic research has shown that while the monocots form a monophyletic group or clade (comprising all the descendants of a common ancestor), the dicots do not.

Molecular studies have both confirmed the monophyly of the monocots and helped elucidate relationships within this group.

Monocots have a distinctive arrangement of vascular tissue known as an atactostele in which the vascular tissue is scattered rather than arranged in concentric rings.

Monocots have almost always been recognized as a group, but with various taxonomic ranks and under several different names.

Older systems tended to place all lilioid monocots with reticulate veined leaves (such as Smilacaceae and Stemonaceae together with Dioscoraceae) in Dioscoreales.

Some analyses make the magnoliids the first to diverge, others the monocots.

So primitive characters of monocots may be present in some derived groups.

Species with one cotyledon are called monocotyledonous ("monocots").

The monocots usually have only one, but the rule is not absolute either way.

The order is thought to have first diverged from other related monocots some 120–130 million years ago (early in the Cretaceous period ), although given the difficulty in classifying the families involved, estimates are likely to be uncertain.

The order Liliales was very large and had become a used to include almost all monocotyledons with colourful tepals and without starch in their endosperm (the lilioid monocots ).

The pollen of the eudicots dates back 125 million years, so the lineage of monocots should be that old too.

The predominant form amongst the monocots is successive, but there are important exceptions.sfn In the microgametogenesis, the unicellular microspores undergoes mitosis and develops into mature microgametophytes containing the gametes.