Question

Proximal end of the filament of stamen is attached to the
A.Anther
B.Connective
C.Placenta
D.Thalamus or petal

Answer 1

Hint:Stamen is the male reproductive part of the flower which produces pollen grains during sexual reproduction of the flower, A group of stamen represents the androecium of the flower.

Complete answer:
-A typical stamen consists of two parts, the anther which is a bilobed structure, and a long stalk also known as Filament.
-There is not a fixed length of stamens, They are variable in different species of flowers.
-The proximal part of the filament is attached to the Thalamus or the petals of the flower.

Option A: The distal part of the filament is attached to the anther. Therefore, this is the incorrect option.

Option B: Connective joins the anthers together as well as it joins the anther with the filament. Therefore, this is the incorrect option.

Option C: The placenta is that part of the flower where the ovules also known as megasporangia get attached inside the ovary. Therefore, this is the incorrect option.

Option D: Proximal part of a filament means the part which is nearest to the point of attachment and the filament of stamen is attached to the thalamus of the flower or sometimes it is attached to the flower petals. Therefore, this is the correct option.

Hence the correct answer is Option D.

Note:
-A sterile stamen which is not capable of producing pollen is known as a staminode, the size of the staminode is very small and it lies inside the innermost whorl of the flower.
-The anther of the flower is a bilobed structure and each lobe has two thecae hence known as dithecous where microsporangia are present which give rise to pollen which is the male gamete in flower.