what are baculae in botany
parvathamma67:
when tectum is present a pollen grain is said to be tectate where the tectum appears appears to be as a continuous sheet without any perforations or covers 80 percent or most of the the surface of a pollen grain in a semi tectum is discountinuous where preforations exist
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When tectum is present a pollen grain is said to be tectate where the tectum appears to be as a continuous sheet without any perforations or covers 80 percent or more of the total surface of a pollen grain (Fig. 4.4). In a semitectate or subtectate pollen grain the tectum is discontinuous where perforations exist.
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A trabecula (plural trabeculae, from Latin for "small beam") is a small, often microscopic, tissue element in the form of a small beam, strut or rod that supports or anchors a framework of parts within a body or organ.Cancellous bone is formed from groupings of trabeculated bone tissue
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