Usually, the monocotyledons do not increase their girth, because ____.

(a)

They possess actively dividing cambium

(b)

They do not possess actively dividing cambium

(c)

Ceases activity of cambium

(d)

All are correct

The common bottle cork is a product of______.

(a)

Phellem

(b)

Phellogen

(c)

Xylem

(d)

Vascular cambium

The wood formed in spring season in called ____________

(a)

Hard wood

(b)

Soft wood

(c)

Early wood

(d)

Non porous wood

Match the following.

(a) Phellum	i. Cork cambium
(b) Phellogen	ii. Secondary cortex
(c) Phelloderm	iii. Cork
(d) Phelloids	iv. lack suberin

(a)

a	b	c	d
iii	ii	iv	i

(b)

a	b	c	d
iii	i	ii	iv

(c)

a	b	c	d
ii	i	iii	iv

(d)

a	b	c	d
i	ii	iii	iv

Choose the wrong statement.

(a)

Intrafascicular cambium originates from procambium.

(b)

It is a part of primary meristem.

(c)

Interfascicular cambium is present inside the vasular bundle

(d)

It is a part of secondary meristem

Canada balsam is obtained from _________

(a)

Abies

(b)

Haematoxylin

(c)

Quercus

(d)

Cinchona

Bark does not include ____________

(a)

cortex

(b)

periderm

(c)

pith

(d)

secondary phloem

In dicot root, periderm originates from  ____________

(a)

cortex

(b)

pericycle

(c)

xylem

(d)

medullary rays

Which of the following is a part of Radial system.

(a)

sieve tubes

(b)

companion cells

(c)

phloem rays

(d)

phloem parenchyma

Assertion (A) : Heart wood is the dead part of wood.
Reason (R) : It resists microerganisims

(a)

A and R are wrong

(b)

A and R are coirect hut R is not the explanation for A

(c)

A is right, R is wrong

(d)

R explains A.