First slide

Secondary Growth

Question

Choose the incorrect match.

Easy

A

Heart wood – Dead structure
B

Spring wood – a part of annual ring
C

Sap wood – secondary xylem formed in earlier years
D

Autumn wood - later formed region of an annual ring.

Solution

Sap wood is secondary xylem formed in recent years. It is light in color, involved in conduction, not durable and peripheral to heart wood having contact with vascular cambium.

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