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A wood louse belongs to the phylum Arthropoda.
Secondary xylem
Examples of primary fuels - wood, coal Examples of secondary fuels - charcoal, coke
because wood is there food and home to live
primary xylem is primary in nature & is derived from procambium. But secondary xylem is secondary in nature and derived from fascicular cambium and interfascicular cambium. Primary xylem is differentiated into protoxylem and metaxylem, but secondary xylem has no such differentiation. In primary xylem vessels and tracheids are long and narrow, and vessels don't have tyloses, but in secondary xylem, vessels are blocked by tyloses, and vessels and tracheids are wider and shorter. Xylem fibres are more abundant in secondary xylem , and found in small numbers in primary xylem. Also unlike in primary xylem, secondary xylem has differentiated into sapwood & heartwood.
it uses its antennae
little pieces of wood louse
The primary sector: - Raw materials, for example; wood, oil, metals, crops. The secondary sector: - Second in the production line mainly manufacturing items, making them and putting them together. For example: a wooden chair - The raw material; wood - Making the chair (In a factory)
Secondary manufacturing refers to further processing of products that have already undergone some manufacturing. E.g. processing wood past its primary stage (e.g., lumber). Primary manufacturing is thus manufacturing of raw materials or materials in their near-natural state (e.g., iron ore, wood logs, ...)
Primary growth is responsible for elongating the plant. In woody plants, primary growth is then followed by secondary growth which allows the plant stem to increase in thickness or girth.
all spiders are poisoness but most are harmless to humans
woodlouse are detritivores, feeding mostly on dead plant matter.