Differentiate between microphylls, macrophylls and sporophylls of pteridophytes.
Answers
The main difference between microphylls and megaphylls is that microphylls are leaves having a single, unbranched vein, whereas megaphylls are leaves with multiple veins. Furthermore, in microphylls, the single vein originates from the protostele without having a leaf gap while megaphylls contain leaf gaps. Moreover, microphylls are the leaves, which occur early in the fossil record up to date while megaphylls develop independently from euphyllophyte leaf precursor structures.
Microphylls and megaphylls are two types of structures that occur in leaves of vascular plants.
Similarities Between Microphylls and Megaphylls
- Microphylls and megaphylls are two types of leaf structures, which occur in vascular plants.
- Both develop independently from euphyllophyte leaf precursor structures.
- They are not homologous structures.
- Moreover, they differ from each other by means of leaf veins and leaf gaps.
- However, their main function is to undergo photosynthesis.
Difference Between Microphylls and Megaphylls
Definition
Microphylls refers to a type of very shortleaf, such as in moss or clubmoss, with a single unbranched vein and no leaf gaps in the stele while megaphylls refer to a type of leaf with several or many large veins branching apart or running parallel and connected by a network of smaller veins.
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