Dioecious plants= Individual plants have either male or female flowers but not both.
Monoecious plants= Individual plants have both male and female flowers on the same plant. These flowers are complete. Having both male and female parts.
2006-06-14 06:42:47
·
answer #1
·
answered by layzriver 4
·
1⤊
0⤋
Plant sexuality deals with the wide variety of sexual reproduction systems found across the plant kingdom. This article describes morphological aspects of sexual reproduction of plants.
That plants employ many different strategies to engage in sexual reproduction was used, from just a structural perspective, by Carolus Linnaeus (1735) to propose a system of classification of flowering plants, and later this subject received attention from Charles Darwin (1877). Flowers, the reproductive structures of angiosperms, are more varied than the equivalent structures of any other group of organisms, and flowering plants also have an unrivalled diversity of sexual systems (Barrett, 2002). But sexuality and the significance of sexual reproductive strategies is no less important in all of the other plant groups. The breeding system is the single most important determinant of the mating structure of nonclonal plant populations. The mating structure in turn controls the amount and distribution of genetic variation, a central element in the evolutionary process
2006-06-14 13:54:30
·
answer #2
·
answered by 223 5
·
0⤊
0⤋
Plant sexuality refers to plants use of meiosis-gametogenesis to produce egg and sperm for sexual reproduction to give greater diversity (instead of the genetic lack of diversity in asexual reproduction like mitosis.) Many plants can do either sexual or asexual reproduction or both. Yes, the aquatic plants, including many species of algae have gametes made by gametophytes. Aquatic sperm is also found in the mosses, liverworts and ferns. Sperm from spermatophyte males antheridium and swim to the female oogonium and fertilize the egg and grow and new sporophyte which releases non sexual spores which can produce new male and female plants.
Aerial sperm is found within pollen grains (the miniature male gametophyte) in both the gymnosperms and angiosperms. Gymnosperms use wind for cross polination and angiosperms often use the birds-bees-pollinators attracted to them by their brilliant colors and scents. So petals are like the protective "sexy attractant clothes" that clothe the ripening male-female parts of a flower, and so it is the flower that is the peak SHOWY sexual stage of sexual beauty....kind of like the TEEN-SEXUAL stage! The flower bud is the prepubescent flower which is not yet RIPE or ready for sex, should not be plucked early and "should not" have its petals removed before ready. (Hint, humans can learn that incest-molest is not healthy-natural by studying flowers!) In flowering plants, angiosperms, pollen tubes grow from pollen after it has landed on the stigma-female part of flower and the 2 sperm in each pollen grain grow down tube via the sticky stigma, to the style and down into the ovary where the eggs in the ovary are. Fertile eggs are the seeds. SO a fruit is a pregnant flower. Riper fruit "gets soft" just like a woman's cervix does during pregnancy-labor, and the fruit "births" drops the seeds-babies of the next generation.
2006-06-14 20:39:54
·
answer #3
·
answered by gopigirl 4
·
0⤊
0⤋
A plant can be male, female or bisexual. (both at the same time)
Double the pleasure they call it. They even have an external facilitator to aid them.
2006-06-14 08:27:18
·
answer #4
·
answered by smashingly.smashing 4
·
0⤊
0⤋
if a plant has a stamen it is male. if a plant has a pistil, it is a female. if a plant has both, then it is not bisexual, it is a hermaphrodite
2006-06-14 11:02:20
·
answer #5
·
answered by boricua82991 3
·
0⤊
0⤋