Question

What are bracteate and ebracteate flowers?

Answer 1

Hint: A flower is a reproductive structure found in flowering plants that are also known as a bloom or blossom (plants of the division Magnoliophyta, also called angiosperms). The vegetative part of a flower, which consists of petals and associated structures in the perianth, and the reproductive or sexual parts, can be divided into two categories. Four types of structures are attached to the tip of a short stalk in a stereotypical flower. On the receptacle, each of these parts is arranged in a whorl.

Complete answer:
A bract is a modified or specialized leaf in botany that is usually associated with a reproductive structure like a flower, inflorescence axis, or cone scale. Bracts are often (but not always) distinct from the leaves of the foliage. They could be smaller, bigger, or have a different color, texture, or shape.
They usually have a different appearance than other parts of the flower, such as the petals or sepals. The presence of bracts is referred to as bracteate or bracteolate, while the absence of bracts is referred to as bracteate and bracteolate, respectively.
bracteate flowers: Flowers with bracts (a reduced leaf at the base of the pedicel) are called bracteate flowers. Bracts are small leaf-like structures found at a flower's base. China rose, tulip, lily, and other flowers are examples.

ebracteate flowers: flowers without bracts are called ebracteate flowers. For instance, mustard.

An involucre is a group of bracts that appear in a whorl at the end of an inflorescence. Many Apiaceae, Asteraceae, Dipsacaceae, and Polygonaceae have an involucre beneath their inflorescences. Each flower in an inflorescence may have its whorl of bracts, known as an involucel in this case.

Note:
Some bracts are brightly colored and serve to attract pollinators, either in conjunction with or instead of the perianth. Euphorbia pulcherrima (poinsettia) and Bougainvillea are two examples of this type of bract: both have large colorful bracts surrounding much smaller, less colorful flowers.