Скачать или смотреть Tissues: Plant & Animal Tissues | ICSE Class 9 Biology

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Parenchyma – living, thin walled, loosely packed, single large vacuole – bulk and soft part – store food, heal wounds and graft, provide support by keeping it turgid. With chloroplast have chlorenchyma for food synthesis; in aquatic plants there is aerenchyma for floating.
Collenchyma – elongated, living, thick at corners, in leaf stalk and below epidermis of stems – support and flexibility to delicate parts; store and manufacture food
Sclerenchyma – long narrow fibre – dead and thick lignified walls –no cytoplasm - has mechanical tissue for strength and support – as fibers (elongated, narrow and tapering at both ends – in cortex and vascular tissues) & sclereids (stone cells which are irregular, brittle and stony in seed coat, nut shell and pulp of guava)

epithelial tissues
Squamous – flat, platelike – pavement epithelium. Cells are thin and nucleus can be marked by bulge – alveoli of lungs, bowman capsule of kidney, epidermis of skin, blood vessels, buccal epithelium, membranous labyrinth of internal ear
Cuboidal – single layer of cube, hexagonal or polygonal; nucleus is centrally placed – kidney tubules, duct of salivary glands, pancreatic glands, thyroid and germinal epithelium of gonads – protection, secretion, absorption, excretion and gamete formation
Columnar – pillar like cylindrical, nuclei is elongated at base – finger like microvilli in intestine to increase absorption – stomach, nasopharynx, intestine, gall bladder, oviduct; sweat glands and sebaceous glands
Ciliated columnar – with cilia at free end – nasal passage, oviducal funne, part of oviduct and uriniferous tubules
Glandular columnar epithelium – unicellular (goblet cell in mucous membrane of alimentary canals); multicellular cells (sweat gland and sebaceous glands)
Sensory columnar – free end produced in sensory hair – in sense organs – taste bud of tongue; in olfactory sacs of nasal chamber
Stratified – in various layers of epithelial cells – upper layers of dead squamous epithelial cells. Tough cells provide protection to underlying cells against mechanical injury.