Stelar System in Pteridophytes

1. Stele includes

a) Vascular tissue

b) Vascular tissue and pith

c) Vascular tissue, pith and pericycle

d) Vascular tissue, pith, pericycle and endodermis

2. Simplest stele is

a) protostele

b) dictyostele

c) stenostele


3. Most primititive type of stele found in pteridophytes is

a) dicytostele

b) solenostele

c) siphonostele

d) protostele

4. Protostele is stele divided into many parts Protostele

a) Angiosperm stele

b) Stele divided into many parts

c) Latent stele

d) Early stele with central solid xylem surrounded by phloem

5. Pith is absent in

a) siphonostele

b) solenostele

c) dictyostele

d) protostele

6. The vascular supply given from the main single stele for leaf is called

a) leaf gap

b) branch trace

c) leaf trace

d) leaf width

7. Foliar gap in vascular cylinder of fern is

a) Parenchymatous zone

b) Air spaces

c) Exclusively xylem area

d) Exclusively phloem area

8. Amphiphloic siphonstele occurs in the stem of Amphiphloic siphonstele

a) Pteris

b) Lycopodium

c) Marsilea

d) Lycopodium

9. Polystelic condition is found in

a) Rachis of Pteris

b) Stem of all species of Selaginella

c) Stem of Selaginella wildenowii

d) Roots of Dryopteris

10. Meristeles are found in

a) Pinus needle

b) fern leaf

c) Cycas stem

d) Fern Rhizome

1. c) Vascular tissue, pith and pericycle6. c) leaf trace 
2. a) protostele7. a) Parenchymatous zone 
3. d) protostele8. c) Marsilea 
4. d) Early stele with central solid xylem surrounded by phloem9. c) Stem of Selaginella wildenowii 
5. d) protostele10. d) Fern Rhizome