Question

Dorsifixed, monothecous anthers are a special feature of

• A. Malvaceae / Cotton
• B. Solanaceae / Tomato
• C. Leguminosae / Pea
• D. Liliaceae

Answer 1

The correct option is A Malvaceae / Cotton

Dithecous stamens are characterized by the presence of two anther lobes in stamens, each of which becomes uniocular at maturity thereby making the mature anther two lobbed. Monothecous stamens have singe anther lobes and thus the anthers are single-celled at maturity. Attachment of anther to the filament is basifixed (filament ends at the base of the anther) or dorsifixed (attachment of filament to anther above the base) or adnate (filament continues into connective) or versatile (attachment of filament at the middle of connective).

Malvaceae or cotton is characterized by the presence of monothecous and dorsifixed anthers.
Solanaceae or Tomato is characterized by the presence of dithecous and basifixed anthers.
Leguminosae or Pea is characterized by the presence of dithecous and basifixed or dorsifixed anthers.
Liliaceae or Onion is characterized by the presence of dithecous, versatile or basifixed anther.

Thus, the correct answer is option A.