| Directions : (1-5) |
| Read the passage given below and answer the following questions. |
| Flower has two parts of a typical stamen - the long and slender stalk called the sterile filament, and the terminal generally bilobed structure called the fertile anther. The proximal end of the filament is attached to the thalamus or the petal or perianth of the flower. Two anther lobes are separated in the anterior region by a deep groove however, attached to each other on eh back side by sterile parenchymatous tissue i.e., connective tissue has vascular strand i.e., xylem and phloem. The number and length of stamens are variable in flowers different species i.e., heterostamens. |
| Collect a stamen each from ten flowers of different species and arrange them on a slide. There are large variation in size seen in nature. Careful observation of each stamen under a dissecting microscope and making neat diagrams would elucidate the range in shape and attachment of anthers in different flowers. A typical angiosperm anther is bilobed with each lobe having two theca, i.e., they are dithecous. Often a longitudinal groove runs lengthwise separating the theca. |
A) Fertile in nature
B) Sterile in nature
C) Infertile in nature
D) Liable to change
Correct Answer: B
Solution :
Sterile in nature
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