What is the Difference Between Protostele and Plectostele

The main difference between protostele and plectostele is that protostele contains a core of xylem surrounded by a region of phloem. But, plectostele contains plate-like regions of xylem surrounded by the phloem.

1. What is the difference between Protostele and Siphonostele?
2. What does Protostele mean?
3. What is Plectostele give example?
4. What is Protostele and its types?
5. How many types of steles are there?
6. What is Manoxylic and Pycnoxylic wood?
7. What is Atactostele condition?
8. What is meant by Siphonostele?
9. What is Stelar evolution?
10. What is Amphiphloic Siphonostele?
11. What is mixed Protostele?
12. What are Archegoniate plants?

What is the difference between Protostele and Siphonostele?

The main difference between protostele and siphonostele is that the protostele consists of a solid core of vascular tissue without a central pith or leaf gaps, whereas the siphonostele consists of a cylindrical vascular tissue, surrounding the central pith and consisting of leaf gaps.

What does Protostele mean?

: a stele forming a solid rod with the phloem surrounding the xylem.

What is Plectostele give example?

Plectostele is a type of protostele in which xylem plates alternate with phloem plates. Eg. Lycopodium clavatum.

What is Protostele and its types?

There are usually three basic types of protostele: haplostele – consisting of a cylindrical core of xylem surrounded by a ring of phloem. ... actinostele – a variation of the protostele in which the core is lobed or fluted.

How many types of steles are there?

There are three basic types of protostele: haplostele (FIG. 7.32), actinostele, and plectostele (FIG. 7.33). In a haplostele, the xylem is circular in cross section or cylindrical in three dimensions; phloem is immediately outside the xylem.

What is Manoxylic and Pycnoxylic wood?

Monoxylic wood is the non-compact wood with large amount of parenchyma, large pith and cortex mixed with less amount of xylem tracheids or wood. ... Pycnoxylic wood is the compact strong wood with large amount of xylem tracheids or wood and small amount of cortex and pith with little Parenchyma.

What is Atactostele condition?

Atactostele is a type of eustele, found in monocots, in which the vascular tissue in the stem exists as scattered bundles. ... The variation has numerous scattered bundles in the stem and is called as an atactostele.

What is meant by Siphonostele?

siphonostele (plural siphonosteles) (botany) A type of stele in which the vascular tissue in the stem forms a cylinder surrounding a central pith and possessing leaf gaps.

What is Stelar evolution?

The primary components of stele are xylem and phloem. $. Tissues like pericycle, medullary rays and pith are also the components of stele. ... 'Stelar theory' also says that the cortex and the stele are the two fundamental parts of a shoot system.

What is Amphiphloic Siphonostele?

amphiphloic siphonostele A monostele type of siphonostele which appears in cross-section as 1 ring of phloem around the outside of the xylem and another around the inside of the xylem ring, but outside the pith. Compare ECTOPHLOIC SIPHONOSTELE. A Dictionary of Plant Sciences. × "amphiphloic siphonostele ."

What is mixed Protostele?

Mixed Protostele: In this case xylem and phloem are uniformly distributed. Xylem elements break up into small groups and all get surrounded by phloem. Most advanced among protostele and considered as a transitional type between true protosteles and siphonosteles. e.g., Lycopodium cerennum, Gleichenia sp., Osmunda sp.

What are Archegoniate plants?

-Archegoniate plants are the plants bearing an Archegonium. Archegonium is the female sex organ. -They are multicellular flask-shaped cells with neck canal cells that produce a single egg (oosphere) at a time. The base is usually swollen and is known as 'venter'. The neck canal cells degenerate upon maturation.