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Gymnosperms and Angiosperms do not need flagellated sperm because they have other meathods to get the sperm to the egg.
In Gymnosperms, the pollen that contains the sperm lands on the inside of a female cone scale where the megaspore mother cell is located. Once it lands there, the pollen begin to dig in and form a pollen tube. While this is happening, the megapore mother cell undergoes meiosis to form four haploid cells (now in gametophyte stage). One of these cells becomes the megaspore, one becomes the endosperm mother cell, and the other two become the gametopyte that surrounds the egg. When the sperm finally reaches the egg, it forms a zygote still inside the gametophyte. This zygote becomes the embryo, which becomes the seed, and the gametophyte becomes the seed coat.
In Angiosperms, pollinators take pollen from one flower to another where it gets attached to a stigma, and forms a tube to that egg.
What else can I help you with?
Why are angiosperms considered as the most successful terrestrial plants compare to other plant?
A simple answer is that they have evolved complex relationships to animal pollinators and seed dispersers, whereas gymnosperms rely on wind pollination and seed dispersal, and ferns and the other lower plants need water. Angiosperms also have vessels in their xylem, which is much better at transporting water quickly. (of course, they have problems of their own) Also, they have fruits enclosing seeds
How does gymnosperms pollinate?
Gymnosperms pollination occurs after the micro spores are released from the male cone. They travel by wind until they get stuck to a female cone due to a sticky resin. Once stuck a pollen tube is grown and pollination occurs
What do in need for viewing sperm cells?
To view sperm cells, you will need a microscope with at least 400x magnification, a glass slide, coverslip, and a stain to make the cells more visible. Additionally, you will need a sample of semen to put on the slide for examination.
What is the difference between sperm and semen?
Semen or seminal fluid is the whitish viscous fluid emitted from the male reproductive tract that contains sperm & liquids (seminal plasma) that help keep them viable. Sperm cells, produced by the testes in humans, represent 2 to 5 percent of semen volume; fluids from tubules, glands, & storage areas of the reproductive system bathe them as they travel down, nourishing them, keeping them motile, or participating in certain chemical reactions. During ejaculation, liquids from the prostate gland & seminal vesicles dilute the sperm & provide a suitable, slightly alkaline environment. An average ejaculation of a human male expels 0.1 to 0.3 cubic inches (2 to 5 ml.), containing 200 to 300 million sperm.Sperm is the smaller, usually motile male reproductive cell of most organisms that reproduce sexually. Sperm cells are haploid (they have 1/2 the No. of chromosomes as the other cells in the organism's body). Sperm often have at least 1 flagellum. During fertilization, the nucleus of a sperm fuses with the nucleus of the much larger oocyte (the female reproductive cell) to form a new organism. In male animals, sperm are normally produced by the testes in extremely large numbers in order to increase the chances of fertilizing an egg. Motile sperm cells produced by some multicellular protist groups (such as the algae), the bryophyte plants, & the seedless vascular plants, require water to swim to the oocyte. In gymnosperms and angiosperms, sperm do not need water for mobility but are carried to the female reproductive organs in the pollen grain. In the cycads and the gingko (both gymnosperms), the sperm are motile & propel themselves down the pollen tube to reach the egg cell. In the conifers and angiosperms, the sperm are not themselves motile but are conveyed to the ovule by the growing pollen tube.The human sperm cell is divided into a head that contains the nucleus, a mid-piece that contains mitochondria to provide energy for the sperm, & a flagellum that allows the sperm to move. When fertilization occurs, the nucleus & other contents from the sperm cells are drawn into the cytoplasm of the oocyte, but the mitochondria in the sperm are destroyed & do not survive in the zygote. Since mitochondria contain their own DNA (thought to be a relic from an existence as separate symbiotic organisms), all of the mitochrondrial DNA in humans is thus inherited from the female. The semen produced by the male reproductive tract act as a medium for sperm typically contains over 100 million sperm cells, all of which have but one purpose: to fertilize the single available oocyte.Nothing semen covers the sperm so that they make it into the vagina safely and it also helps it keep the sperm safe so if any thing happens inside the penis or something the semen is wiped away and not the penis
What is a sentence with sperm?
I need you to give me your sperm so i can have a baby Sperm is the seed of the man
Is photosynthesis a gymnosperm or angiosperm?
Photosynthesis is a process that occurs in both gymnosperms and angiosperms. It is the process by which plants convert light energy into chemical energy in the form of glucose. Both gymnosperms and angiosperms have chlorophyll in their tissues that enables them to carry out photosynthesis.
What were the first plants that did not require water for transferin sperm to eggs?
The first plants that evolved to not require water for transferring sperm to eggs were the gymnosperms, such as conifers and cycads. Gymnosperms produce seeds that are not enclosed in a fruit, allowing them to be dispersed without the need for water for reproduction. This adaptation allowed them to colonize drier environments and diversify during the Paleozoic era.
how are angiosperms and its pollinators mutually rewarded by their relationships?
The angiosperms are pollinated and the pollinators get what they need. An example is honey bees, which pollinate flowers and also get what they need to make their hives.
What is the difference between ferns and gymnosperms?
Ferns are non-flowering plants that reproduce via spores, while gymnosperms are seed-producing plants with naked seeds (not enclosed in a fruit). Additionally, ferns typically have simple leaves with branching veins, while gymnosperms have needle-like or scale-like leaves.
Were the first plants that did not require water for transferring sperm to eggs.?
Gymnosperms
Does bryophytes require water fertilization?
No, angiosperms do not need water to reproduce. Bryophytes, or mosses, need water to reproduce-the sperm cells swim to the egg by following a trail of chemicals in the water. Thus, mosses reproduce in wet, rainy seasons of the year. Angiosperms, on the other hand, do not require water because the stamen releases male gametophytes, pollen grains, that are carried by the wind to the egg in the carpel.
Can a human get pregnant with birds sperm?
No they can't because they need the x and y sperm that we need. They do not have that type of sperm.
What is need of sperm in body?
Sperm is needed to reproduce.
Do sperm need oxygen?
no. sperm can live outside the male body for up to 72 hours
How can i make sure my husband sperm is strong?
i want have child but my sperm not strong what need do for strong my sperm
Why are angiosperms considered as the most successful terrestrial plants compare to other plant?
A simple answer is that they have evolved complex relationships to animal pollinators and seed dispersers, whereas gymnosperms rely on wind pollination and seed dispersal, and ferns and the other lower plants need water. Angiosperms also have vessels in their xylem, which is much better at transporting water quickly. (of course, they have problems of their own) Also, they have fruits enclosing seeds
Is ivy an angiosperm or gymnosperm?
Yes. Angiosperms cover all flowering/fruit bearing plants (this group covers most modern plants). The alternative would be gymnosperms which are the older "naked seed" plants such as conifers "pines". This is a smaller percentage of total plants so one can assume that most plants in your area are angiosperms. Need proof? Just look up poison ivy flower, because if it flowers it is angiosperm.
