Question

Versatile anthers occur in
A. Helianthus
B. Asparagus
C. Triticum
D. Pisum

Answer 1

Anther is the terminal part of stamen, which contains pollen grains.
Versatile anthers are T-shaped anthers, which are suitable especially for wind pollination.

Complete answer:
Stamens are pollen-generating (male) reproductive organs of a flower, at the end of which anthers are present. These anthers produce and collect pollen grains. Anthers are arranged in flower in such a way that the pollen grains are exposed enough, for further process of reproduction.
Versatile anthers are anthers arranged in T-shape, which possess well-exposed pollen. These types of anthers depend on wind pollinators and are usually present in wind pollinated pants.
In order to answer the question, it is necessary to study and have knowledge about the types of plants along with their morphological properties.
Helianthus are usually tall, perennial plants. They are commonly known as “sunflowers”. It is an inflorescence of many flowers together. To prevent in-breeding, anther forms a tube-like structure all around the style. Pollen is given in this tube, and ready to take up by pollinators.
Asparagus is a tall plant, belonging to the liliaceae family, with separate misexual individuals that produce either male or female flowers. Anther of these plants are basified, but not versatile.
Pisum is a pea producing plant, belonging to the family Fabaceae. Anther of these plants are also basified, but not versatile.
Triticum (Poaceae family) is a commonly cultivated plant for its staple food (wheat). Arrangement of anther is versatile, that is, the lobes of anther are joined with the filament in the middle portion, with both ends free.

So, the answer to the question is Triticum.

Note:
Plants having versatile anthers depend on wind to expose the pollen free in air.
In the grass family, anemophily occurs, that is the pollination happens through wind. That is why they usually contain versatile anther.