Simple nutation occurs in dorsiventral organs, such as flat leaves, both foliage and floral.

Changes in temperature cause flowers to open or close by movements which resemble the simple nutation of dorsiventral organs.

The leaf blade is dorsiventral, medium-sized to large and disposed oppositely or in a whorl and with entire margin.

In contrast to the Irids, typical plant leaves - termed dorsiventral and bifacial - have upper and lower surfaces of different appearance and anatomy.

They are dorsiventral, meaning they have distinct upper and lower surfaces, with the ventral, or lower, surface being planar and the dorsal, or upper, surface being convex.

Like movements of radial organs, such as stems, cylindrical leaves, and roots, have been termed circumnutation, or revolving nutation, to distinguish them from the simple nutation of dorsiventral organs.

Leaf Anatomy: The leaves of all species are built on a dorsiventral arrangement of cells, with the epidermis and palisade layer on the adaxial surface and the spongy tissue on the abaxial surface.

When Lellingeria was first described in 1991, it was thought to always have a radially symmetrical rhizome, but it has since been learned that some of the species that belong in Lellingeria have a dorsiventral rhizome.

The tail is dorsoventral and looks very thin, when looked upon in profile.

Due to erosion and dorsoventral crushing, features of the skull are hard to interpret.

The buccal opening was small and extended in the dorsoventral direction.

Cells throughout the dorsoventral extent of the trunk neural tube expressed each of these genes.

The basis capituli moves in the dorsoventral plane, and articulates with the body proper.

This along with all of the other factors are important for activating Nodal genes that propagate normal dorsoventral development.

Anticipate more robust establishment of dorsoventral polarity and less early embyro wastage.

When considering any one segment, the dorsoventral axis is perpendicular to the AP axis.

The cranium of the bat is large, has a greater length than width, and is flattened in the dorsoventral plane.

The end result is a bilaterially symmetrical animal, but with its dorsoventral axis rotated a quarter of a turn.

This term has also been used as a synonym for dorsoventral organs, those that extend from a dorsal to a ventral surface.

Ubx represses Wingless in the posterior compartment of the dorsoventral axis.

Leech The leech moves by producing dorsoventral undulations.

Notably, the dorsoventral position of cells expressing each of these markers was similar in mutant and wild-type embryos.

By connecting the outermost points the dorsoventral axis is formed (sometimes hyphenated: dorso-ventral).

The siphuncle is relatively large, 0.3 the dorsoventral dimension and is ventral, although not necessarily marginal.

Median cleft in posterior parietal margin in dorsoventral aspect."

Wnt signaling can be implicated in the formation of the anteroposterior and dorsoventral axes.

"Gli2 and Gli3 play distinct roles in the dorsoventral patterning of the mouse hindbrain."

As with anteroposterior, the terms "dorsal" and "ventral" are also used to describe relative positions along the dorsoventral axis.

The different axes include the anteroposterior axis, dorsoventral axis, and right-left axis.

Alternatively, this ancestor may have possessed only a diffuse nerve net or several bundles of nervous tissue with no distinct dorsoventral localization.

However, the beak's dorsoventral strength may have enabled Andalgalornis to quickly strike down on its prey in a repeated attack-and-retreat hunting strategy.

It is described as a dorsoventral line of pigmentation occurring symmetrically and bilaterally for about ten centimeters along the lateral edge of the biceps.

Azizi et al. found that longitudinal contractions of the constant volume hypaxial muscles were compensated by an increase in the dorsoventral dimensions.