Question

Keel is the characteristic feature of flower of?

• A. Aloe
• B. Indigofera
• C. Tulip
• D. Tomato

Answer 1

The correct option is B

Indigofera

The correct option is B.

Explanation of the correct option:

1. The Papilionaceae subfamily is distinguished by vexillary aestivation, which occurs when one of the two lateral petals' margins is overlapped by the posterior petal.
2. Another margin of these two lateral petals overlaps the two united anterior petals.
3. Keel is formed by the union of the anterior petal.

Explanation of the incorrect options:
Option A:

1. Aloe flowers are typically spikes, tubular, yellowish-orange, and 3 feet tall.
2. A flower cluster is arranged on a long stalk.
3. As a result, it lacks a keel.

Option C:
Tulips are a genus of perennial herbaceous bulbiferous geophytes that bloom in the spring.

Option D:

1. Tomatoes are developed from the ovary.
2. Therefore, they also do not possess keel

Final answer:

Indigofera demonstrates the presence of keel.