Pith cavity occurs in the stem of ?
(1) Helianthus

(2) Zea mays

(3) Cucurbita   

(4) Dracaena

Match the Column I and II.

        A  B  C  D
1.   1   2  3   4
2.   3   1  2   4
3.   4   1  2   3
4.   4   3  2   1

Root cambium is derived from?

(1) primary meristem

(2) secondary meristem

(3) intercalary meristem

(4) apical meristem

Which one of the following comprises only simple tissue?

1. Parenchyma, Collenchyma and Sclerenchyma

2. Parenchyma, Xylem and Collenchyma

3. Parenchyma, Xylem and Sclerenchyma

4. Parenchyma, Xylem and Phloem

Match the following

1. A-i, B-iii, C-v, D-ii, E-iv
2. A-iii, B-i, C-ii, D-v, E-iv
3. A-ii, B-iv, C-v, D-i, E-iii
4. A-v, B-iv, C-iii, D-ii, E-i

What is the destiny of primary xylem in a dicot root showing extensive secondary growth?

1. It is retained in the centre of the axis

2 It gets crushed

3. May or may not get crushed

4. It gets surrounded by primary phloem

Which one of the following cell types always give rise to secondary cortex?

1. fusiform initial cells

2. root cap

3. protoderm

4. Phellogen

While removing the skin of a potato tuber, we remove

1. Periderm

2. Epidermis

3. Cuticle

4. Sapwood

In which of the following pairs of parts of a flowering plant is epidermis absent?

A. Root tip and shoot tip

B. Shoot bud and floral bud

C. Ovule and seed

D. Petiole and pedicel

Epiblema of roots is same as