Anatomy of flowering plants (Tissue system and root)

When xylem and phloem are on same radius, the

vascular bundles are said to be -

• Conjoint

• Radial

• Concentric

• Exarch

What is the characteristics of a vascular bundle of

monocot stem -

• Open and surrounded by a sclerenchymatous

  bundle sheath

• Closed and not surrounded by bundle sheath

• Closed and surrounded by bundle sheath

• Open and not surrounded by a bundle sheath

The basic difference between stem and root is that

xylem in stem is -

• Polyarch

• Exarch

• Mesarch

• Endarch

In monocot stems, secondary growth cannot occur

because vascular bundles are

• Scattered

• Open

• Closed

• Radial

Ground tissue includes :-

• All tissues external to endodermis

• Epidermis and cortex

• All tissues except epidermis and vascular bundles

• All tissues internal

Cortex is the region found between :-

• Endodermis and pith

• Epidermis and stele

• Endodermis and vascular bundle

• Pericycle and endodermis

Stomata in grass leaf are

• Dumb-bell shaped

• Barrel shaped

• Rectangular

• Kidney shaped

Assertion :- Interfascicular cambium is the

dedifferentiated tissue.

Reason :- In interfascicular cambium cells attain

definite shape and function and lost power of

division.

• Assertion is True but the Reason is False.

• both true

• both false

• none

Assertion :- Epidermal tissue system is of

protective in function.

Reason :- It is the outer most tissue system which

initially comes in contact with environmental factors.

• Both are true

• both are false

• only assertion is false

• Both are true and Reason is a correct explanation of the Assertion

Assertion :- Both vascular cambium and cork

cambium are lateral meristem.

Reason :- Both are involved in secondary growth

of plant by addition of cells in lateral direction of main

axis.

• both are correct

• only reason is correct

• both are wrong

• both Assertion and Reason are True and the Reason is a correct explanation of the Assertion