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Anatomy Of Flowering Plants

Question
CBSEENBI11025109
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In a dicotyledonous stem, the sequence of tissues from the outside to the inside is

  • phellem - pericycle - endodermis - phloem

  • phellem - phloem - endodermis - pericycle

  • phellem - endodermis - pericycle - phloem

  • pericycle - phellem - endodermis - phloem

Solution

C.

phellem - endodermis - pericycle - phloem

Phellem or cork is a tissue formed on the outer side of phellogen or cork cambium. It is protective in function.

Endodermis is the boundary between the cortex and the stele. It is a distinctly visible layer of cells immediately outside the vascular cylinder in roots and shoots.

Pericycle regulates the formation of lateral roots by rapidly dividing near the xylem elements of the root.

Phloem is the vascular tissue in plants which conducts sugars and other metabolic products downwards from the leaves.

Some More Questions From Anatomy of Flowering Plants Chapter

What is periderm? How does periderm formation take place in the dicot stems?

Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.

Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain. 

A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?

Identify the tissue system from among the following

Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is

A conjoint and open vascular bundle will be observed in the transverse section of

Match the followings and choose the correct option from below
A. Meristem                 i. Photosynthesis, storage
B. Parenchyma             ii. mechanical support
C. Collenchyma           iii. Actively dividing cells
D. Sclerenchyma         iv. stomata
E. Epidermal tissue       v. sclereids
Options:

Match the following and choose the correct option from below
A. Cuticle               i. guard cells
B. Bulli form cells   ii. single layer
C. Stomata            iii. waxy layer
D. Epidermis          iv. empty colourless cell
Options:

Epiblema of roots is equivalent to

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