A Text-book of Botany, Volum 1

activity Algae apex apical appearance assimilation axis Bacteria bast become bodies bordered pits branches buds cambium carbonic acid cavities cell sap cell walls central cylinder centrospheres chlorophyll chloroplasts chromatophores colour Conifers contain cork curvature cytoplasm Dicotyledons direction elements elongated embryonic epidermal cells epidermis especially evaporation example exhibit external fertilisation fibres flowers foliage leaves formation functions fundamental tissue Fungi geotropic germination green growing point growth Gymnosperms heliotropic higher plants intercellular spaces internal layer leaf leaf-blades leaf-stalks light living longitudinal medullary rays movements nourishment nucleus nutrient nutrition occurs organs oxygen parenchyma pericycle Phanerogams phloem pollen portions position primary cortex produced protoplasm reproduction respiration result rhizomes root-hairs roots salts seeds sexual reproduction shoots side sieve-tubes soil solution spores starch starch grains stem stimulus stomata strands structure substances surface tendrils thickened tion tracheids transpiration transverse trees tube tubers usually vascular bundles vegetative cone vessels wood xylem