Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ?

Assessment: WAEC SSCE - Biology - 2013 (Objective) Subject: Biology

Question 1 Report

Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ?
Answer Details
The correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside is: - pith, xylem, cambium, phloem, cortex, collenchyma, and epidermis. Explanation: - Pith is a central region of parenchyma cells in the stem. - Xylem is located just outside the pith, and it transports water and minerals from roots to leaves. - Cambium is a layer of meristematic cells between xylem and phloem, which can differentiate into both types of tissues. - Phloem is located on the outer side of cambium, and it transports sugars from leaves to other parts of the plant. - Cortex is a layer of ground tissue located outside the phloem. - Collenchyma is a type of ground tissue located just below the epidermis and helps provide support to the plant. - Epidermis is the outermost layer of cells that protects the plant and helps in the exchange of gases and water vapor. Therefore, the correct option is: pith, xylem, cambium, phloem, cortex, collenchyma, and epidermis.

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