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What mosquito housefly eagle turtle and dog undergo internal-external fertilization?
External fertilization occurs when sperm and eggs unite in the open, rather than within specialized organs during internal fertilization. Turtles, eagles, and dogs most definitely undergo internal fertilization. Mosquitoes and houseflies, on the other hand, undergo external fertilization.
Does sperm cell contain a nucleus?
Yes, they do. During fertilization, the nucleus of the sperm and ova fuse to form a complete cell. Remember, the chromosome number in a sperm cell or ovum is half the normal number, or haploid.
How does the human fertilization process work?
In the human fertilization process, the sperm which reach the egg fight for entrance. Once entrance has been gained by a single sperm, the rest are pushed away and die within 48 hours. You can learn more about this process at the How Stuff Works website.
Explain why an egg is so much longer than a sperm cell?
An egg is larger than a sperm cell because it contains the necessary organelles and nutrients to support the initial stages of embryonic development. Sperm cells, on the other hand, are designed for mobility and carrying genetic material to the egg for fertilization. The size difference is related to the specific functions each cell type serves in the process of sexual reproduction.
Why is the ovum big and why it doesn't move?
The ovum is bigger than sperm because it contains nutrients and organelles needed to support early embryonic development. It does not move due to its size and structure, as well as the surrounding cells and reproductive structures that help guide it toward the sperm for fertilization.
Why are there more egg and sperm cells produced during external fertilization than during internal fertilization?
Why are there generally more eggs and sperm cells produce during external fertilization thean internal fertilization
Do male or female sperm swim faster in the process of fertilization?
Male sperm typically swim faster than female sperm in the process of fertilization.
Which of internal and external fertilization is more efficient?
Internal since it limits the space in which the sperm and egg are found in. Fewer eggsare produced by the female conserving raw materials and energy. The male still produces a tremendous amount of sperm but it is less than what is wasted in external fertilization. The offspring are afforded more protection by the mother so fewer are produced
How is fertilization of a single egg by more than 1 sperm prevented?
The face that sperm cannot live long, and only one sperm can fertilize egg at one time.
Why is internal fertilization considered more advantageous than external fertilization?
Internal fertilization is considered more advantageous than external fertilization because it provides a safer and more controlled environment for the vulnerable eggs and sperm to meet, increasing the chances of successful fertilization. It also allows for the development of specialized structures and behaviors that can enhance reproductive success, such as copulatory organs and courtship rituals. Additionally, internal fertilization helps prevent desiccation of gametes in terrestrial environments and reduces competition from other sperm.
How does the speed of male sperm compare to female sperm in the process of fertilization?
Male sperm typically swim faster than female sperm in the process of fertilization. This difference in speed can affect which sperm reaches and fertilizes the egg first.
What is the name of merging one sperm and one egg?
The term for the joining of an egg and a sperm is fertilization.
What is the function of the fertilization envelope?
The fertilization envelope acts as a barrier that prevents polyspermy, which is when an egg is fertilized by more than one sperm. It also helps in the activation of the egg and plays a role in the early developmental processes of the embryo.
Why do cats produce less sperm and eggs than frogs?
Cats are mammals and have a higher reproductive investment in each offspring, so they produce fewer sperm and eggs to increase the chances of successful fertilization. Frogs, being amphibians, typically produce more sperm and eggs to increase the chances of fertilization due to external fertilization and lower parental care.
Why does organisms that use internal fertilization produces less offspring than the ones that use external fertilization?
Because internal fertilization requires a womb and placenta to protect and nourish the growing embryos - which limits the number of offspring the mother can produce. Laying eggs outside the body means the female can potentially produce many more off-spring, and thus vastly increase the chances of the species survival.
How do fertility enhance the opportunity for fertilization of an egg?
Fertility increases the production of eggs, and if the fertility in a woman is higher, than there is a higher chance of an egg getting hit by a sperm cell, as there will be more of them.
Why in animal fertilization are there generally more egg and sperm cell produced during external fertilization than during internal fertilization?
I'm no expert, but I'm fairly sure that the environmental conditions (ie. air temp) makes quite a big difference
