Anatomy of Flowering Plants · Question 53

Some vascular bundles are described as open because these :

1. are capable of producing secondary xylem and phloem
2. are not surrounded by pericycle
3. possess conjunctive tissue between xylem and phloem
4. are surrounded by pericycle but no endodermis

The cork cambium, cork and secondary cortex are collectively called :

1. Periderm
2. Phellem
3. Phellogen
4. Phelloderm

Ground tissue includes :

1. All tissues external to endodermis
2. Epidermis and cortex
3. All tissues internal to endodermis
4. All tissues except epidermis and vascular bundles

In land plants, the guard cells differ from other epidermal cells in having

1. cytoskeleton
2. mitochondria
3. endoplasmic reticulum
4. chloroplasts

Transport of food material in higher plants takes place through -

1. Sieve elements
2. Transfusion tissue
3. Companion cells
4. Tracheids

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? [Figure]

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

Heartwood differs from sapwood in –

1. Having dead and non-conducting elements
2. Being susceptible to pests and pathogens
3. Presence of rays and fibres
4. Absence of vessels and parenchyma

Which one of the following is not a lateral meristem ?

1. Interfascicular cambium
2. Intercalary meristem
3. Intrafascicular cambium
4. Phellogen

The chief water conducting elements of xylem in gymnosperms are :

1. Fibres
2. Transfusion tissue
3. Vessels
4. Tracheids

In barley stem vascular bundles are -

1. Closed and scattered
2. Closed and radial
3. Open and in a ring
4. Open and scattered