A vascular bundle without pith is

  • A

    Protostele

  • B

    Siphonostele

  • C

    Solenostele

  • D

    None of these

Similar Questions

In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to:

$(a)$ secretion of secondary metabolities and their deposition in the lumen of vessels.

$(b)$ deposition of organic compounds like tannins and resins in the central layers of stem.

$(c)$ deposition of suberin and aromatic substances in the outer layer of stem.

$(d)$ deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.

$(e)$ presence of parenchyma cells, functionally active xylem elements and essential oils.

Choose the correct answer from the options given below:

  • [NEET 2022]

Abundant pith is characteristic of

Which of the following statements is correct?

Draw illustrations to bring out anatomical difference between

$(a)$ Monocot root and dicot root

$(b)$ Monocot stem and dicot stem

Match the following

Column $-I$ Column $-II$
$(a)$ Dicot leaf $(p)$ Polyarch
$(b)$ Dicot stem $(q)$ Pallisade and spongy mesophy $II$
$(c)$ Monocot root $(r)$ Endarch
$(d)$ Monocot leaf $(s)$ Bulli form Cell