AP BIOLOGY

Detailed explanation-1: -Xylem is a complex permanent, conducting tissue that conducts water and mineral nutrients in only an upward direction from root to leaves (unidirectional). It is responsible for the transport of water and minerals from roots to other parts of the plant, and it also provides mechanical support to the plant.

Detailed explanation-2: -Complete answer: Xylem and phloem are an example of complex permanent tissues. These tissues are named so because they are made up of more than one type of cells and all these different types of cells coordinate to perform the same function.

Detailed explanation-3: -Xylem is a complex tissue. Xylem is composed of 4 elements: tracheids, vessels, xylem parenchyma and xylem fibres. Vessels are not present in gymnosperms.

Detailed explanation-4: -Xylem and phloem are the two different types of complex permanent tissues.

Detailed explanation-5: -Answer: A complex tissue is the one which has more than one type of cells having a common origin which coordinates to perform a common function. Xylem and phloem are made of different types of cells hence they are called complex tissues.