Question:
The presence of corollary corona, sagittate anthers and dumb-bell shaped stigma are the characteristic features of_____________
The presence of corollary corona, sagittate anthers and dumb-bell shaped stigma are the characteristic features of_____________
Updated On: Apr 17, 2024
- Hibiscus rosa-sinensis
- Musa paradisiaca
- Ravenala madagascariensis
- Catheranthus roseus
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The Correct Option is D
Solution and Explanation
Catharanthus roseus (Vinca rosea) belongs to Apocynaceae family (Oleander family). It is commonly known as periwinkle. It is an ever blooming herb with pink and white flowers. It yields an alkaloid named vinca leucoblastine (VLB) and vincristine (VC) used in studies on cell division. It has corollary corona, sagittate anthers or arrow shaped anthers and its stigma is capitate or dumb
bell shaped.
bell shaped.
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Concepts Used:
Structure of a Flower
The flower structure comprises four major parts or whorls—known as the calyx, corolla, androecium, and gynoecium.
Diversity of Flowers:
Flowers come in a range of sizes and shapes, but their anatomy, in general, is the same: sepals, petals, stamen, and carpel. A whorl, or circular positioning, is created by arranging these parts in a circular pattern.
Flowers come in various forms:
- Complete flower - The sepals, petals, stamens, and pistil all constitute a complete flower.
- Incomplete flower - An incomplete flower is one that lacks one or more of these structures.
Parts of a flower:
- Vegetative Part: A flower's vegetative component comprises the following:
- Petals
- Sepals
- Reproductive Part: Flowers consist of the reproductive organs of the plant. A flower's reproductive parts involves the following:
- Pistil
- Stamen
- Leaf
- Stem
- Receptacle