AP BIOLOGY

Detailed explanation-1: -phloem, plant vascular tissue that conducts foods made in the leaves during photosynthesis to all other parts of the plant. Phloem is composed of various specialized cells called sieve elements, phloem fibres, and phloem parenchyma cells.

Detailed explanation-2: -Phloem is the vascular tissue in charge of transport and distribution of the organic nutrients. The phloem is also a pathway to signaling molecules and has a structural function in the plant body. It is typically composed of three cell types: sieve elements, parenchyma, and sclerenchyma.

Detailed explanation-3: -Sieve tubes formed of sieve cells form the main conducting part of the phloem. Sieve tubes are suited for translocation of food because they possess broader lumen and perforated cross walls.

Detailed explanation-4: -Xylem and phloem are known as complex tissues as they are made up of more than one type of cells. These cells work in a coordinated manner, as a unit, to perform the various functions. Xylem helps in conducting water and minerals.

Detailed explanation-5: -Phloem is a complex permanent plant tissue that helps in the transportation of food. It is made up of sieve tubes, companion cells and phloem parenchyma. It transports food bidirectionally.