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Among the following: apical meristem, cortex, and vascular tissues, which do you think would be respiring most? Least? Why?

Plant stem cell

Cortex (anatomy)

Hormone replacement therapy

Phosphofructokinase activity

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The apical meristem is likely to be respiring the most among the three options (apical meristem, cortex, and vascular tissues) due to its high metabolic activity and rapid cell division . The apical meristem is responsible for generating indeterminate growth in plants and is a source of cells for the development of new tissues . On the other hand, the cortex, which is the outermost layer of the stem and root, may be respiring the least. The cortex is primarily involved in providing mechanical support and protection to the plant, rather than active metabolic processes . Vascular tissues, which include xylem and phloem, are responsible for transporting water, nutrients, and sugars throughout the plant. While they are metabolically active, their respiration rates may be lower compared to the apical meristem due to their specialized functions in transport .

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Journal Article•DOI Adrenal cortex: scalpels, syringes, and separatory funnels Susan F. Akana 01 Nov 2004-American Journal of Physiology-endocrinology and Metabolism	The cortex would be respiring the most because it is necessary for maintaining metabolism, while the apical meristem and vascular tissues would be respiring less.
Open access Quantitative Measurements of Hexokinase Activity in the Shoot Apical Meristem, Leaf Primordia, and Leaf Tissues of Judith Croxdale, Peter J. Vanderveer - Show less +1 more 01 Jan 1986 7 Citations	The apical meristem would likely be respiring the most, as it is the actively growing region of the plant. The vascular tissues would likely be respiring the least, as they primarily transport nutrients and water.
Open access•Book The shoot apical meristem: its growth and development. R. F. Lyndon 01 Jan 1998 128 Citations	The apical meristem would be respiring the most as it is responsible for cell division and growth. The cortex and vascular tissues would be respiring less as they have more specialized functions.
Open access Quantitative Measurements of Phosphofructokinase in the Shoot Apical Meristem, Leaf Primordia, and Leaf Tissues of Dianthus Judith G. Croxdale 01 Jan 1983 13 Citations	The apical meristem would be respiring the most, while the vascular tissues would be respiring the least, based on the phosphofructokinase activity measurements in the study.

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