they are plant tissuesExplanation:SIMPLE PERMANENT TISSUE This type of tissue are made of one type of cells, which are SIMILAR in origin, structure and function. Simple permanent tissues are of three types,PARENCHYMACHARACTERISTICS- it is the basic packaging tissue that fills the spaces between other tissues and is found most abundantly in plants.They have unspecialised/ undifferentiated cells with thin cell walls made of cellulose. they have large intercellular spaces as the cells are loosely packed. Cells have dense cytoplasm and nucleus and large vacuole.FUNCTION- This tissue provide support to plants and parenchyma of stem and roots stores nutrients and water and is called as STORAGE PARENCHYMA. when it contains chloroplast having chlorophyll and performs photosynthesis, it is called CHLORENCHYMA. In aquatic plants, parenchyma has large air spaces to provide buoyancy to plants to help them float and exchange gases, it is called AERENCHYMA. Isolated parenchyma cell or group of cells are capable of producing the whole plants.LOCATION- This type of tissue found in non woody or soft parts of roots,stem,flowers,leaves and fruits.COLLENCHYMA CHARACTERISTICS- The cells are living, ELONGATED and irregularly thick at the corners made of cellulose or pectin they have very less or no intercellular spaces. The cells have a nucleus, dense cytoplasm and Large. the wall has large amount of hemicellulose and pectin in addition to cellulose. The lignin is not present.FUNCTIONS- These cells provide flexibility (elasticity) and MECHANICAL support to the aerial parts of the plants and allows them to bend.LOCATION- This type of tissue is found in leaf STALKS, below epidermis of leaves and stem.SCLERENCHYMA CHARACTERISTICS- The cells are long, narrow thick walled due to deposition of lignin. Such cell walls are called as lignified walls and have pits. These cells lack intercellular spaces due to deposition of lignin. The cells do not have a nucleus and cytoplasm and are dead.FUNCTIONS -These cells provide rigidity and STRENGTH to plants and makes it hard and can bear stress and strains.LOCATION- This type of cells are found in stems,around vascular bundles,in the veins of leaves.