BIOL 232 Lecture 5: Plant Bio Practical study
Document Summary
Potato modification- tuber- has leaf scar (nail indent) and bud (other thing) Horsetail fern- has black rings- silica duckweed- smallest vascular plant, modified stem. Volvox- unicellular, filamentous, colonial, oogamy (different sex cells) can be sexual or asexual, algae, has daughter colony. Chlamydomonas single cell, can be sexual or asexual depending on environment (harsh environment- asexually because it uses less energy) , syngamy- fusion of two cell nuclei. Euglena- unicellular- stigma- light detector and contractile vacuole. Whisk fern aka psilotum nudum- sporophyte with dichotomous branching- sporangia are ball like structures that produce spores for germination at the end of the diactomous branching, no roots, epiphyte- gets nutrients from air. Equisetum- horsetail fern- rough silica in little bands, hollow inside, longitudinal ridge, photosynthesis, conductive tissue. Staghorn- epiphyte, grows on tree and gets water and nutrients from the air. Marsilea- roots in sediment and the leaves float --- no lignified tissue.
