Anatomy of Flowering Plants · Question 48

Gymnosperms are also called softwood spermatophytes because they lack

1. Cambium
2. Thick-walled tracheids
3. Phloem fibres
4. Xylem fibres

Water containing cavities in vascular bundles are found in

1. Maize
2. Cycas
3. Sunflower
4. Pinus

Closed vascular bundles lack

1. Ground tissue
2. Conjunctive tissue
3. Cambium
4. Pith

Companion cells are closely associated with

1. Sieve elements
2. Trichomes
3. Vessel elements
4. Guard cells

The common bottle cork is a product of

1. Phellogen
2. Xylem
3. Vascular Cambium
4. Dermatogen

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