Question

Find the odd one out. Give reason to support your answer.

Root, petal, sepal, ovary

Answer 1

Flower:

1. In the flowering plants, reproductive structures are present called flowers.

Parts of flower:

1. Flower consists of a flower whorl and stalk with which the flower is attached to the main axis of the plant.
2. The flower has four whorls : Calyx (sepal), corolla (petal), androecium (stamen) and gynoecium (pistil).
   • Sepal/Calyx: Sepals are the green-colored portion beneath the petals. Sepals help in protecting the rising buds.
   • Petal/Corolla: Petals are the bright-colored part of the flower that attracts bees, insects, and birds in which color may vary from plant to plant.
   • Stamen/Androecium: Male reproductive parts are known as stamens or androecium which produce pollen grains. Two parts of the androecium are anther(swollen tip) and filament(stalk).
   • Carpels/Gynoecium: Female reproductive organs are called pistils or carpels. These are the innermost parts where seed formation takes place. It consists of three parts- Stigma, style, and ovary.

Final answer: Root is the odd one because all the others are the parts of the flowers.