What is Imbricate in botany?
What is Imbricate in botany?
Definition. adjective. (botany) Of a flower bud in which the margins of petals and sepals within the flower bud are overlapping such that one (or more) of the petals and sepals is outside all others and the others are inside in one margin while inside on the other. verb.
What is Imbricate aestivation example?
Rest are arranged in a twisted manner. Or if the margins of sepals or petals overlap one another but not in any particular direction, then it is known as imbricate aestivation. Eg. Cassia, gulmohar.
What is Valvate and Imbricate?
Valvate: Margins of the adjacent petals touch each other but do not overlap e.g., sepals of Hibiscus. Twisted: Margin of one petal overlaps with the margin of another petal e.g., petals of Hibiscus. Imbricate: There is irregular overlapping of petals e.g., Legumes.
What is Imbricate arrangement?
Imbricate definition Having regularly arranged, overlapping edges, as roof tiles or fish scales.
What is Imbricate aestivation Class 11?
Aestivation is the arrangement of accessory floral organs (sepals or petals) in relation to one another in a floral bud. It may be of valvate, open, imbricate or twisted type. When the margins of petals or sepals overlap one another without any specific direction, it is imbricate aestivation.
What is Imbricate aestivation in corolla?
Aestivation refers to the positional arrangement of petals and sepals of the flower within a flower bud before it has opened. In pisum, descending imbricate aestivation is present. In descending imbricate aestivation, the posterior petal overlaps one margin of the two lateral petals.
What is the difference between twisted and Imbricate aestivation?
The key difference between imbricate and twisted aestivation is that imbricate aestivation is a type of aestivation where the margins of appendages overlap with one another but not in any regular direction, while twisted aestivation is a type of aestivation where the margins of appendages overlap with one another in a …
What is Valvate aestivation in flower?
Aestivation is the mode of arrangement of the petals or sepals relative to one another in the floral buds. Aestivation can be of various types – imbricate, valvate, contorted or twisted, convolute, quincuncial, vexillary and plicate.
What is the difference between Imbricate and twisted aestivation?
What is ascending Imbricate aestivation?
In imbricate aetivation, both margin of one petal are covered by the other two petals and both margin of another one, covers other. Rest are arranged in twisted manner. It is of two types. Ascending imbricate the posterior petal is innermost, i.e., its both margins are overlapped.
What is ascending and descending Imbricate aestivation?
What is Vexillary aestivation?
Definition of vexillary estivation : estivation (as in most pea flowers) in which one large upper petal folds over and covers the other smaller petals.