2
Question
In a dicotyledonous stem, the sequence of tissues from the outside to the inside is ________________.
In a dicotyledonous stem, the sequence of tissues from the outside to the inside is ________________.
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Solution
The correct option is C Phellem - Endodermis - Pericycle - Phloem
Phellem is the outmost layer of cork cambium, which is
suberised. Therefore, this is the first layer to be found. The endodermis is one
the layer of cortex, which comes under the phellem. The pericycle is the layer
that comes between endodermis and vascular bundles.
The dicotyledonous stem has a conjoint, collateral vascular
bundle, whereas xylem is internal and phloem is external. Hence, phloem is to
be encountered after the pericycle. Hence, option C is correct.
Phellem is the outmost layer of cork cambium, which is suberised. Therefore, this is the first layer to be found. The endodermis is one the layer of cortex, which comes under the phellem. The pericycle is the layer that comes between endodermis and vascular bundles.
The dicotyledonous stem has a conjoint, collateral vascular bundle, whereas xylem is internal and phloem is external. Hence, phloem is to be encountered after the pericycle. Hence, option C is correct.
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