Question No:1

The vascular bundles in the stem of monocots are typically

[A] collateral
[B] bicollateral
[C] concentric
[D] radial



Question No:2

Sclerenchymatous sheath is present in vascular bundles of

[A] monocot root
[B] dicot root
[C] dicot stem
[D] monocot stem



Question No:3

In monocot roots which types of vascular bundles are found?

[A] Collateral, conjoint and closed
[B] Radial VB. with exarch xylem
[C] Bicol lateral, conjoint and closed
[D] Radial VB. with endarch xylem



Question No:4

Lateral roots arise from

[A] Pericycle
[B] pith
[C] stem
[D] root



Question No:5

In dicot roots, cells of which region show casparian strips?

[A] Cambium
[B] Endodermis
[C] Pericycle
[D] Hypodermis



Question No:6

In grasses,

[A] certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells
[B] when the bulliform cells in the leaves absorb water and are turgid, the leaf surface is exposed
[C] when bulliform cells are flaccid due to water stress, they make the leaves curl inwards to minimise water loss
[D] all are correct



Question No:7

Assertion: All tissues lying inside vascular cambium are called as bark.
Reason: Bark is made up of Phellogen, phellem and phelloderm lying inside secondary phloem.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:8

Assertion: Stomata are absent in submerged hydrophytes.
Reason: Respiration occurs by means of air chambers in submerged plants.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:9

Assertion: Cambium is a lateral meristem and cause growth in width
Reason: Cambium is made up of fusiform and ray initials in stem.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:10

Assertion: Higher plants have meristematic regions for indefinite growth.
Reason: Higher plants have root and shoot apices.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:11

Assertion: In collateral vascular bundles phloem is situated towards inner side.
Reason: In monocot stem, cambium is present.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:12

Assertion: Thick cuticle is mostly present in disease resistant plants.
Reason: Disease causing agents cannot grow on cuticle and cannot invade the cuticle.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:13

Assertion: Quiescent centre is found in the centre of the root apex.
Reason: It consists of actively dividing cells.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:14

Assertion: Permanent tissue is composed of mature cells.
Reason: Meristematic tissue is a group of actively dividing cells.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false