Answer:
A diploid zygote is formed; Endosperm will form.
Explanation:
The fertilization in angiosperms (flowering plants) is known as double fertilization. In this process, two male gametes or sperms are involved where one sperm fertilizes the ovum or egg cell and forms a diploid zygote that develops into an embryo while the other sperm fertilizes two polar nuclei and forms a triploid cell that develops into the endosperm.
The female reproductive structure of a flower includes stigma, style, and ovary. During pollination, the pollen grain attaches to the stigma where it begins to germinate and forms a pollen tube that grows into the style and reaches the ovary. It enters the ovary and penetrates an opening in the ovule called the micropyle. The generative cell in the pollen grain travels through the pollen tube and divides to form two sperms that enter into the ovule.
Usually, six cells (three antipodal cells, two synergid cells, and one egg cell) and two polar central nuclei are present in an unfertilized ovule. Here, a process known as syngamy occurs, where one haploid sperm fertilizes the haploid egg cell or ovum and forms a diploid zygote. It later grows into an embryo. The other haploid sperm fuses with the two haploid polar nuclei to form a triploid nucleus that develops into the endosperm (nutrient-rich tissue) which provides nourishment to the growing embryo. Later, the fertilized ovule forms the seed and the ovary develops into the fruit which envelops and protects the seed.
The answer is 0.8 second. A cardiac cycle or also known as a
heartbeat approximately takes about 0.8 second to complete one cycle. A
heartbeat is fast since it is a muscle that pumps blood throughout the body.
The Cardiac Cycle has two phases, first the Diastole phase, wherein the heart
ventricles are relaxed, while the heart fills with blood, second is the systole
phase, wherein the ventricles contract and pumps the blood out from the heart
and takes it to the arteries to be
spread all around the body.
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Answer:
Explanation:
while cold fronts form when a cold air mass advances against a warm air mass. Cold fronts form between two air masses that barely move, while stationary fronts form when a warm air mass is trapped between two cold air masses. Cold fronts form when a warm air mass moves over a cold air mass, while stationary air fronts form when a cold air mass moves over a warm air mass. Stationary fronts form when a warm air mass is trapped between two cold air masses, while cold fronts form when a warm air mass moves over a cold air mass.
Answer:
organ than body than organism
Explanation:
