What is the difference between 'heartwood' and 'sapwood'?
(a) Sapwood is the older part of the xylem
(b) In contrast to sapwood, heartwood has
lost its ability to transport water and minerals
(c) Heartwood contains parts of the phloem which explains its different color
(d) Heartwood and sapwood are both needed to transport organic material to the root
Ans: (b) In contrast to sapwood, heartwood has
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