Trends of gametophyte in evolution of plants
Write down the trends of gametophyte in evolution of the plants?
Expert
A propensity of gametophyte evolution in the plants has been towards formation of gametes which are independent from water. In bryophytes and in pteridophytes the fecundation is totally dependent on water. In phanerogamic plants such dependency doesn’t exist.
Another propensity is reduction in the size and period of gametophyte.
In bryophytes the gametophyte is indeed lasting stage. In pteridophytes, gymnosperms and angiosperms it became temporary stage and its relative size was successively decreased.
A third evolutionary trend relates to interdependency between gametophytes and sporophytes. In bryophytes the sporophyte is entirely dependent on the gametophyte to survive. In the remaining plants sporophyte is the independent stage and once autotrophic gametophyte in bryophytes and pteridophytes became dependent upon the sporophyte in phanerogamic plants.
How do the phytohormones helps in the development of fruits?
Specify the advantages of the cognos?
Specify the parts into which Small intestine is divided?
Write down the phenomenon of apical dominance in the plants? How can it be artificially eliminated?
Define the term mixed gland? Why the pancreas is considered as a mixed gland?
Prepare a 4-5 page report, addressing the following; A) Discuss the company’s advertising strategy and how it aligns with its marketing goals.B) Discuss how the effectiveness of the advertising will be measured.C) Discuss the promotional strategies that may used in addit
What are the various types of joints?
Explain, what is Radula? Explain its function.
In scanning the report of my wife at gender column it is written as III, What is the meaning of it?
Artificial, Natural, phylogenetic are main Classification of Organisms, An Artificial classification is based on one or many easily observed similarities and feature. For example, L
18,76,764
1924521 Asked
3,689
Active Tutors
1419519
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!