The walls of xylem cells are lignified (strengthened with a substance called lignin ). This allows the xylem to withstand pressure changes as water moves through the plant.
The cell membrane is flexible because of the presence of oil like substances called phospholipids, which gives it a fluid nature. While as the cell walls are rigid because of the presence of the thick layers of the substances like cellulose in plants, chitin in fungi and peptidoglycon in bacteria.
What? no. B. false, cooled magma is called extrusive igneous rock.
All living cells arise from pre existing cells.
The correct answer for this question would be the first option. The reason that is most likely why fisheries management official recommends that long line fishing in a certain area be prohibited during the spring and summer season of the year is to prevent <span>the catching of sea birds during their nesting and breeding season. Hope this answer helps.</span>
2 is crescent and 4 is gibbous
