Anther Structure and Microsporangia — NEET Biology
📚 Practice ConceptA 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. Let us understand the various types of tissues and their organisation in the transverse section of an anther. The bilobed nature of an anther is very distinct in the transverse section of the anther. The anther is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe.
Match the following anatomical features of a young angiosperm anther with their correct descriptions or characteristics: Column I: Structure/Tissue A. Typical angiosperm anther B. Each anther lobe C. Outer three wall layers of microsporangium D. Tapetum cells E. Sporogenous tissue Column II: Description/Function/Count I. Nourishes developing pollen grains and often contains more than one nucleus II. Undergoes meiotic divisions to form microspore tetrads III. Performs the function of protection and assists in dehiscence of anther IV. Contains two microsporangia V. Tetragonal and tetrasporangiate in structure
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