DENDROLOGY

Detailed explanation-1: -Parenchyma cells may be associated with other types of cells to form heterogeneous complex tissues such as parenchyma of xylem and phloem. Parenchyma cells are essential for activities like photosynthesis, storage, secretion, assimilation, respiration, excretion and radial transport of water and solute.

Detailed explanation-2: -The functions of parenchyma tissues are storage, photosynthesis, and to help the plant float on water. Collenchyma-Are similar to parenchyma cells with thicker cell walls. They are meant to provide mechanical support to the plant structure in parts such as petiole of the leaf.

Detailed explanation-3: -In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle-the chloroplast. Chloroplasts perform photosynthesis during the daylight hours.

Detailed explanation-4: -The plant tissue responsible for this transport of food material is called phloem tissue. This process of transportation of food from the site of photosynthesis to other plant parts is called translocation.