Question

Heart wood or duramen is [KCET 2001]
A) Outer region of secondary xylem
B) Inner region of secondary xylem
C) Outer region of secondary phloem
D) Inner region of secondary phloem

Answer 1

Heart wood or duramen is
➡️ Outer region of secondary phloem

Answer 2

Answer:

B. Inner region of secondary xylem.

Explanation:

A. Outer region of secondary xylem

This option is incorrect because the outer region of the secondary xylem is called Sapwood.

B. Inner region of secondary xylem.

This option is correct because heartwood is the inner region of the secondary xylem.

C. Outer region of secondary phloem

This option is incorrect because the secondary phloem is called a complex tissue.

D. Inner region of secondary phloem

This option is incorrect because the inner region of the secondary phloem is not called a heart wood.

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