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6.Anatomy of Flowering Plants
medium
The first formed primary phloem is referred as ...$A$... The later formed primary phloem is referred as ...$B$...
Choose the correct combination of $A$ and $B$
A
$A-$ protoxylem; $B-$ metaxylem
B
$A-$ protophloem; $B-$ sieve tube cells
C
$A-$ metaphloem; $B-$ sieve tube cells
D
$A-$ protophloem; $B-$ metaphloem
Solution
The first formed primary phloem consists of narrow sieve tubes and is referred to as protophloem and later formed primary phloem is referred to as metaphloem.
Standard 11
Biology
