Thallus organisation in fungi +3 zoology long question answer in simple word

THALLUS  ORGANISATION  IN   FUNGI

- Thallus is a plant body that is not differentiate into stream , leaves , lock true roots and a vascular system.

- Thallus are two meassue type of fungi,

          1. Non mycellia thallus

          2. Mycellia thallus

1. NON  MYCELLIA  THALLUS

- Non mycellia fungi are basicaly unicellular with a true  cellwall.

- In some cases unicelluar thallus producing bud cell.

- These bud cell may remain attached one another such as chain of bud cell is refer to as pseudo-mycellium.

2. MYCELLIUM

- It is a true fungi.

- The thallus filaments is composed of hyphae.

- Loosely arrenged hyphae are collectively known as mycelium.

- These are 2 types of hyphae  in the mycellial fungi,

         a. Non septated hyphae

         b. Septate hyphae

a. NON SEPTED HYPHEA

- Hyphae is a long tubular structure.

- Hyphae is divided by cross wall called septa.

- Non septate hypae are most charecteristic of zygomycota and oomycota.

- Mycellium contain numerous nucleus in common mass of cytoplasm such a condition is known as wenocyficmyclic.

b. SEPTED HYPHEA

- These are tubular structure and long body.

- septate hyphae are contain 2 or more nucleus in different cytoplasm.

- These are 2 types of septa ;

1. Primery septa

2. Advantious septa

1. PRIMERY SEPTA

- In ascomycota are divided in three mitotic nuclea division.

- This septate the doughter nuclei.

2. ADVANTITIOUS  SEPTED

- These are found in lower group fungi as zygomicota.

- They are absence of mitosis and meosis.

- They are formed in the local concentration cytoplasm.

- It more form one part of the fungus to another fungus.

      Prof.- Dr ramakant pradhan

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