Chemical competition among organisms is referred to as __________. 

TLS Online TPP Program

#Question id: 19269

#Unit 9. Diversity of Life Forms

The sporophytes of mosses depend on the gametophytes for water and nutrition. In seed plants, the reverse is true. From which seed plant sporophyte structure(s) do the immature (unfertilized) gametophytes directly gain water and nutrition? 

TLS Online TPP Program

#Question id: 19270

#Unit 9. Diversity of Life Forms

the result of heterospory is 

TLS Online TPP Program

#Question id: 19271

#Unit 9. Diversity of Life Forms

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms, except 

TLS Online TPP Program

#Question id: 19272

#Unit 9. Diversity of Life Forms

The seed coat’s most important function is to provide 

TLS Online TPP Program

#Question id: 19273

#Unit 9. Diversity of Life Forms

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? 

TLS Online TPP Program

#Question id: 19274

#Unit 9. Diversity of Life Forms

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated: 

1. sporophyte dominance, gametophyte independence 

2. sporophyte dominance, gametophyte dependence 

3. gametophyte dominance, sporophyte dependence