Question

Polyphyllous petaloid perianth is found in
A. Festuca
B. Gloriosa
C. Polyanthes
D. Crinum

Answer 1

Hint: The calyx of Polyphyllus flowers are not fused and it is separated from one another, while the tepals of gamophyllous are joined and could not be distinguished. Perianth provides the outer protection to the reproductive organs. When the sepal does resemble the petals, then we call it petaloid.

Complete Answer:
- The non-reproductive parts of the Festuca flower are distinguishable properly. The sepals have a white border and the petals are white in colour.
- The Polyanthes plants are a family of Neotropical flowers with colouring petals and mostly green sepals. Hence, they are definitely not petaloid. Although the tepals are separated from one another, this flower is thus an example of petaloid.
- Crinum are a type of perennial plant with large visible flowers well differentiated from the sepals. They are also polyphyllus but not petaloid.
- The Gloriosa is a flowering plant of the Lily family. They are polyphyllus and the sepals resemble the structure of petals.

Hence, we can say that Polyphyllus Petaloid Perianth is found in only Gloriosa plants out of these options.

Additional information: The perianth is the non-reproductive part of the plant and the reproductive part consists of gynoecium and androecium.

Note: The polyphyllus flowers have well separated Sepals and well differentiable. The sepals of the flowers which look like petals are called petaloids. The non-productive part of the flower is called Perianth and this is formed by calyx (sepals) and corolla (petals).