Table 142 Primitive and Advanced Features of Nonvascular Pla

Table 14.2 Primitive and Advanced Features of Nonvascular Plants as They Relate to Adaptat o Land features ACdeanced features Table 14.3 Primitive and Advanced Features of Seedless Vascula Plants as They Relate to Ada ation to Land Table 14.4-Structures and Functions of the Nonvascular Plants and Seedless Vascular Plants function Sporophyte/Gametophyte Example structure Archegonium

Solution

primitive and advanced features of non vascular plants for land adaptation.

Primitive features:

1. Lack of proper vascular tissue .

2. gametpohyte is being dominant phase of life cycle.

3.sporophyte is dependent on the gametophyte.

Advanced features:

1.Development of cuticle to avoid water loss through transpiration.

2. Sporophyte being erect.

3. Development of multicellular gametangia and complex embryonic development.

primitive and advanced features of vascular plants for land adaptation.

Primitive features:

1.Gametophyte is small , independent, lacks vascular tissue,cuticle,photosynthetic, found in moist shady habitats ,dispersal by spores.

2. sperms are motile and require water for fertilization .

advanced features.:

1. Well developed photosynthetic sporophyte representing dominant phase of the life cycle.

2.plant well differentiated into aerial stem, leaves and underground roots.

3.Sporophyte has waxy cuticle , stomata and bears leaves or fronds as in ferns.

4.Development of vigorous rhizome for vegetative propagation.