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How xylem is adapted to its functions
thick walls containing lignin - strengthen and prevent xylem vessels from collapsing
hollow tubes with no cytoplasm - water to flow easily
no end walls - forms a continuous tube for water to move upwards
dead cells with no cell contents - more space for water to flow
name one feature dicotyledonous leaves that distinguishes them from monocotyledonous leaves
branching veins
broad shaped leaves
explain why leaf is an organ
it is made from a group of tissues working together to perform a specific function
palisade meosphyll
contains many chloroplasts
upper epidermis
transparent to allow light in
spongy mesophylls
has air spaces to allow diffusion of gases