Consider the following statements:
In spring season vascular cambium
i. Is less active
ii. Produces a large number of xylary elements
iii. Forms vessels with wide cavities of these,

(a)

(i) is correct but (ii) and (iii) are not correct

(b)

(i) is not correct but (ii) and (iii) are correct

(c)

(i) and (ii) are correct but (iii) is not correct

(d)

(i) and (ii) are not correct but (iii) is correct.

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

In the diagram of lenticel identify the parts marked as i, ii, iii, iv

(a)

i. phellem, ii. Complementary tissue, iii.Phelloderm, iv. Phellogen.

(b)

i. Complementary tissue, ii. Phellem, iii.Phellogen, iv. Phelloderm

(c)

i. Phellogen, ii. Phellem, iii. Phelloderm, iv. complementary tissue

(d)

i. Phelloderm, ii. Phellem, iii. Complementary tissue, iv. Phellogen

The common bottle cork is a product of______.

(a)

Phellem

(b)

Phellogen

(c)

Xylem

(d)

Vascular cambium

What is the fate of primary xylem in a dicot stem showing extensive secondary growth?

(a)

It is retained in the centre of the axis

(b)

It gets crushed

(c)

May or may not get crushed

(d)

It gets surrounded by primary phloem