Proximal end of the filament of stamen is attached to the: (NEET 2016 (Phase I))
Answer: (D) Thalamus or petal. A stamen is a stalk (filament) bearing an anther; the distal end of the filament carries the anther while its proximal (basal) end is inserted onto the thalamus, or onto the petals when the stamen is epipetalous (as in brinjal).
- A.Anther
- B.Connective
- C.Placenta
- D.Thalamus or petal✓
Correct Answer
(D) Thalamus or petal
Solution & Explanation
A stamen is a stalk (filament) bearing an anther; the distal end of the filament carries the anther while its proximal (basal) end is inserted onto the thalamus, or onto the petals when the stamen is epipetalous (as in brinjal). The connective merely joins the two anther lobes, and the placenta belongs to the gynoecium, so the proximal attachment is to the thalamus or petal. NCERT Reference: Ch 5, p.64, lines 23-30 — "Each stamen which represents the male reproductive organ consists of a stalk or a filament and an anther." ... "When stamens are attached to the petals, they are epipetalous as in brinjal"