Question

128. Large well-developed pith is found in
(1) Monocot leaf (2) Dicot root
(3) Monocot root (4) Dicot leaf
129. Parenchymatous balloon like swellings that block
the lumen of xylem vessels is
(1) Tyloses
(2) Pit
(3) Lenticel
(4) Cork
130. Ground tissue system
(1) Is composed of simple permanent tissues
(2) Composed of complex permanent tissues
(3) Includes all the tissues except epidermis
(4) Includes general cortex, endodermis and
cambium​

Answer 1

Answer:

129. Lenticles

May be it will help you

Answer 2

Answer:

128. Large well-developed pith is found in Monocot root

Explanation:

Primary Structure of Monocot roots

The typical monocot roots show following features:

• Epiblema is single layered, thin walled, colorless, polygonal without intercellular spaces, with presence of unicellular root hairs, hence also called as piliferous layer or rhizodermis.

• Cortex may be heterogeneous with outer dead exodermis.

• Endodermis consists of barrel shaped parenchyma without intercellular spaces. Casparian stripes are little present but passage cells are absent.

• Pericycle gives lateral roots only, secondary growth is absent.

• Vascular bundles are radial; Xylem is exarch, bundles more than six.

• Metaxylem elements are oval or circular.

• Conjunctive tissues are limited or even absent.

• Pith is large or rarely reduced.

129Parenchymatous balloon like swellings that block

129Parenchymatous balloon like swellings that blockthe lumen of xylem vessels is Tyloses

130 Ground tissue systemIncludes general cortex, endodermis and

Includes general cortex, endodermis andcambium