Question

Smallest flower belongs to
A. Rosa indica
B. Wolffia microscopica
C. Ranunculus sceleratus
D. Colocasia antiquorum

Answer 1

Hint: The smallest flowers are found in an extremely small free-floating water plant. But they are visible by naked eye.

Complete answer:
Rosa indica are garden roses. They
are very common garden plants with visibly attractive flowers. Their flowers are very fragrant with various colors and multiple layers of petals. The smallest rose flowers are about 1.25 cm in diameter. Some subspecies grow up to 17 cm in diameter.
Therefore, this is the incorrect option.

Option B: Wolffia microscopica are free-floating angiosperms. They are commonly known as duckweed or watermeal. The plants themselves are really small in size. The plant body is about 1 mm in diameter. And the flowers are present in a small depression on the top surface of the plant. Wolffia flowers are the smallest known flower in the world. Therefore this is the correct answer.

Option C: Ranunculus sceleratus are commonly known as Celery leaved buttercup plants. They are herbs that can grow up to 0.5 meters in height. They have tiny yellow flowers. The flowers are 5-10 mm in diameter. They usually have 5 or less than five petals. They are characterized by reflexed sepals which are as long as petals. Therefore, this is the incorrect option.

Option D: Colocasia antiquorum are commonly known as elephant ears because of the shape of their leaves. They are a type of ornamental plant with bright purple color leaves. Their flowers are a few centimeters in size. Therefore, this is the incorrect option.

Hence, the correct answer is option (B)

Note: The Wolfia or duckweed family has around 38 species of minute flowering plants. They are found all over the world and float along with water from one waterbody to another. They produce a tiny one-seeded fruit.