Question

Syncarpous gynoecium has two or more_______
a. Free carpels
b. Fused carpels
c. Free ovaries
d. Free stigma

Answer 1

In angiosperm plants or flowering plants, gynoecium is the female reproductive part of flower, and the male parts of flower are called as androecium. In some plants, flowers have both gynoecium and androecium and some flowers represent only one.

Complete answer:
Gynoecium is the innermost & fourth whorl of the flower, it is the central part of the flower and known as the female reproductive organ. Pistil or gynoecium is composed of one or more carpels. Carpels are also known as megasporophylls. Normally, carpel consists of three parts such as ovary and stigma. Based on the number of carpels, the gynoecium in flowering plants are following type.

- Monocarpellary gynoecium: In this type of gynoecium only one carpel is present. Eg; Dolichos
- Bicarpellary gynoecium : In this type, two carpels are present. Eg; Solanus.
- Tricarpellary gynoecium: This type of gynoecium represents three carpels. Eg; Allium.
- Tetracallary gynoecium: Four carpels are found in such a type of gynoecium. Eg; Oenothera.
- Pentacarpellary gynoecium: Five carpels are found in pentacarpellary gynoecium. Eg; Hibiscus.
- Multicarpellary gynoecium: More than five carpels are found in this gynoecium. Eg; Abutilon.

Carpels are found in fused or free state in gynoecium, on behalf of free and fused, they two of type, Apocarpous gynoecium and Syncarpous gynoecium. When the carpels are found in free state they are called Apocarpous gynoecium, Eg; Nelumbo. While the carpels represent a fused state, they are known as syncarpous, Eg; Datura.

Hence, the correct answer is option (B).

Note: The flowering plants are the most evolved category of plant kingdom, they represent an advanced version of sexual reproduction, and the process of double fertilization is also found in this angiosperm plant.