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The cluster of developing cells from conception until birth is called an .?
Embryo, between the 3rd and 8th week. Fetus, after the 8th week
What does an egg contribute to an embryo?
It is the mother's gamete. It contains the 23 chromosomes that she provides to the embryo.
Is parthenogenesis a form of asexual reproduction?
Yes, parthenogenesis is a form of asexual reproduction where an egg develops into an embryo without fertilization by a male gamete.
What are the male and female gametes?
The male gamete is the sperm cell, which is small and mobile, allowing it to fertilize the female gamete. The female gamete is the egg cell, also known as the ova, which is larger and contains nutrients to support early development of the embryo. When fertilization occurs, the sperm and egg combine to form a zygote, which develops into a new individual.
Where does the endosperm come from in a plant and what is its purpose?
the endosperm is in the gymnosperm 'naked seeds' and the angiosperm flowering plants. in gymno - haploid (n) gives nutrients to the embryo the only difference with the angiosperm is that its not haploid (n) but triploid (3n)
Which pair of gametes can unite to produce a zygote that will develop into a normal human male embryo?
The male gamete - spermatozoon and the female gamete - ovum.
What portions of the pine nut are diploid?
The embryo and endosperm of the pine nut are diploid. The embryo is formed from the fusion of a male gamete (sperm) and a female gamete (egg), both of which are haploid, resulting in a diploid zygote. The endosperm is also formed from a fusion of a male gamete and a central cell in the female gametophyte.
The cluster of developing cells from conception until birth is called an .?
Embryo, between the 3rd and 8th week. Fetus, after the 8th week
What functions of female gamete?
The primary functions of the female gamete (egg or ovum) are fertilization by a male gamete (sperm) to create a new organism, containing half of the genetic material needed for reproduction, and supporting the development of the new embryo into a fetus within the uterus.
What does an egg contribute to an embryo?
It is the mother's gamete. It contains the 23 chromosomes that she provides to the embryo.
What is a ovule part of the female flower?
The ovule is the part of the flower where the embryo sac is housed, and the embryo sac contains the female gamete (egg), which, when fertilized by the sperm in a pollen grain, will produce a zygote. What was once a flower will become a fruit. The zygote develops in the ovule, and forms the seed, which will eventually be dispersed from the fruit to start a new generation. So, the ovule is analogous to the pollen: one contains the female gamete, and the other contains the male gamete.
Are butterfly eggs unicellular?
The gamete of butterflies are unicellular from the female. However, the egg containing the embryo is actually a multicellular egg.
Is parthenogenesis a form of asexual reproduction?
Yes, parthenogenesis is a form of asexual reproduction where an egg develops into an embryo without fertilization by a male gamete.
What are the male and female gametes called and what is the result of their fusion?
The male gamete is called sperm and the female gamete is called egg or ovum. When sperm fertilizes the egg, the result is a zygote, which is the initial stage of a new individual (embryo) with a complete set of genetic material from both parents.
What is the difference between pollination and fertilization gymnosperms vs angiosperms?
In gymnosperms, pollination refers to the transfer of pollen to the female ovule, while fertilization is the fusion of the male gamete with the female gamete within the ovule. In angiosperms, pollination occurs when pollen reaches the stigma of the flower, and fertilization happens when the male gamete fuses with the female gamete in the ovule, which is enclosed in the ovary.
Why do females only produce one gamete?
Females produce one gamete because they have a larger investment in each gamete compared to males. This is due to the fact that female gametes contain more nutrients and resources needed for fertilization and early development of the embryo. Producing multiple gametes would require a greater expenditure of energy and resources.
How many sex cells contribute when they combine?
Generally two sex cells i. e. the male gamete combines with the egg to form the zygote that develops into a new organism (embryo).
