Tetradynamous condition, variation in length of stamen, actinomorphic flower and hypogynous condition are present in

To answer the question regarding the tetradynamous condition, variation in the length of stamens, actinomorphic flowers, and hypogynous condition, let's break it down step by step:

1. Actinomorphic Flowers

Actinomorphic flowers, also known as radially symmetrical flowers, are those that can be divided into two identical halves in multiple planes. This symmetry is an important characteristic to identify the type of flower under discussion.

Key point: Actinomorphic flowers have radial symmetry, making them easy to recognize by their symmetrical design in multiple planes.

2. Stamen Structure

The stamen is the male reproductive organ of a flower, consisting of two parts: the anther (which produces pollen) and the filament (the stalk that supports the anther). The variation in the length of the filaments is a key factor in identifying different flowers.

Key point: Focus on the variation in the filament lengths when analyzing the flowers in the question.

3. The Tetradynamous Condition

The tetradynamous condition refers to a specific arrangement of stamens found in certain flowers, particularly those in the Brassicaceae family. In this arrangement, the flower has six stamens: four that are longer and two that are shorter. This variation in the length of the stamens (filaments) is a key characteristic of the tetradynamous condition.

Key point: The tetradynamous stamen arrangement is characterized by having stamens of unequal lengths, specifically four long stamens and two short ones.

4. Analyzing the Options

Now, let's look at the options provided:

• Osemum: Has a uniform stamen length of 1mm, showing no variation in the length of filaments.
• Mustard: Exhibits a tetradynamous stamen arrangement, with 6 stamens (4 long and 2 short), indicating variation in filament lengths.
• Peasum: All stamens are equal in length (1.5mm), showing no variation.
• Capsicum: All stamens are equal in length (2mm), showing no variation.

Key point: The tetradynamous arrangement is evident in Mustard, where the variation in filament length (four long and two short) is the defining characteristic.

5. Conclusion

Based on the analysis, the only flower among the options that demonstrates variation in the length of its filaments and possesses a tetradynamous stamen arrangement is Mustard.

Final Answer: The correct answer is Mustard, as it displays the tetradynamous condition with a variation in the length of the stamens.