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- What is the evolutionary trend in the alternation of generation in plants? Elaborate on adaptive advantages of this trend.In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? ovary → style → stigma stigma → style → ovary ovary→ stigma→ style stigma→ ovary → styleWhat is the evolutionary trend in the alternation of generation in plants? Elaborate on the adaptive advantage of this trend.
- Rank the relative size of the gametophyte generation in the following plant lineages: Bryophyte Seedless Vascular Plant Angiosperms ✓ [Choose ] Mid Largest Smallest [Choose ]What features not present in seedless plants have contributed to the enormous success of seed plants on land?What are the trends of the gametophyte in the evolution of plants?
- In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesWhat major reproductive adaptations facilitated the evolution of the seed?What is the role of strobili or cones in plant kingdom?