question_answer

In dicotyledonous stem, which of the following is the sequence of tissues from to outside?

A)  Pith, phloem, cambium, protoxylem, metaxylem, pericycle, parenchyma, collenchyma, endodermis and epidermis

B)  Pith, cambium, phloem, protoxylem, metaxylem, pericycle, endodermis, parenchyma, collenchyma and epidermis

C)  Pith. phloem, protoxylem, metaxylem, cambium, pericycle, endodermis, parenchyma, collenchyma and epidermis

D)  Pith. protoxylem, metaxylem, cambium, phloem, pericycle, endodermis, parenchyma, collenchyma and epidermis

Correct Answer: D

Solution :

 In dicotyledonous stem the sequences of tissues from inside to outside in its transverse section is pith, wood parenchyma, protoxylem, metaxylem, cambium, phloem, pericycle (sclerenchyma), endodermis, parenchyma (cortex), collenchyma (hypodermis), epidermis cuticle and multicellular epidermal or shoot hair.