Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified:

 

	A	B	C	D
1.	Guard cell	Stomatal aperture	Subsidiary Cell	Epidermal Cell
2.	Epidermal Cell	Guard Cell	Stomatal aperture	Subsidiary cell
3.	Epidermal Cell	Subsidiary Cell	Stomatal aperture	Guard Cell
4.	Subsidiary Cell	Epidermal Cell	Guard Cell	Stomatal aperture

Some vascular bundles are described as open because these:

Compared to a dicot root, a monocot root has: 

1. Many xylem bundles 

2. Inconspicuous annual rings 

3. Relatively thicker periderm 

4. More abundant secondary xylem 

The periderm includes:
1.  Secondary phloem
2.  Cork
3.  Cambium
4.  All of these

Identify the incorrectly matched pair:

A vessel less piece of stem possessing prominent sieve tubes would belong to
1. Pines
2. Eucalyptus
3. Grass
4. Trachodendron

When we peel the skin of a potato tuber, we remove

Fibres are likely to be absent in

In which of the following pairs of parts of a flowering plant is epidermis absent?
1. Root tip and shoot tip
2. Shoot bud and floral bud
3. Ovule and seed
4. Petiole and pedicel

Phellogen and Phellem respectively denote
1. Cork and cork cambium
2. Cork cambium and cork
3. Secondary cortex and cork
4. Cork and secondary cortex