The amount of direct injury to the plant is low, when these insects serve as vectors for plant viruses they can cause great damage.

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#Id: 10589

#XL - R Botany

II.Non-Vascular plants (Bryophytes)

Homosporous

Gametophyte- Dominant phase

Sporophytic phase- Lengthy

Sporogonium formation takes place

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#XL - R Botany

II.Non-Vascular plants (Bryophytes) 

They also known as Atracheates which means no trachea Rhizoids- absorbing and anchoring organs

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#XL - R Botany

II.Non-Vascular plants (Bryophytes)

Primitive form-  Riccia and Marchantia

comprises of thalloid-  attached to substratum through unicellular, unbranched rhizoids

Rhizoids-branched, multicellular in Funaria

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#Id: 10592

#XL - R Botany

II.Non-Vascular plants (Bryophytes)

Haplodiplontic alteration of generation

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#Id: 10593

#XL - R Botany

Mode of  reproduction

Végétatives reproduction-  Tuber, gammae, fragmentation etc.

Sexual reproduction-  Oogamous

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Sex Organs-  Multicellular and jacketed

Male-   Antheridium 

(Biflagellate antherozoids)

Female-  Archegonium 

(flask shaped produce single egg)