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What cell does the gametophyte generation 1n begin in each pine cone?
Wiki User
∙ 9y ago
In the female pine cone, the gametophyte generation (1N) begins in the megasporangium. For males, it begins in the microsporangium.
Wiki User
∙ 9y ago
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What is a truncated cone?
A truncated cone is basically a cone with it's tip cut off.
What is a triangle with a round bottom?
It is the net of a cone. -
What is a time cone?
If by "Time Cone" you mean a Light Cone (http://en.wikipedia.org/wiki/Light_cone), then a light cone is a graphical construct depicting how causality (how event A can affect event B) works in the universe. The actual "cone" is a flash of light - the fastest any information in the universe can travel. Anything inside the cone (nearer to the time axis) can be influenced by (or can influence, depending on the orientation of the cone) an event occurring at the same time as the flash. Anything outside the cone (closer to the space axis) can neither influence nor be influenced by an event happening at the same time as the flash.
How do you use the word cone in a sentence?
The default cone search radius is i arc minute.
What is the lowering of the water table that occurs when water is pumped from a well?
the cone of depression
What is cone cell?
Cone cell fatigue is when the cone cell gets tired after looking at an object for so long.
What is cone cell fatigue?
Cone cell fatigue is when the cone cell gets tired after looking at an object for so long.
Does cone cell have a nucleus?
Yes a cone cell does have nucleus because all cells have nucleus
What is the function of the spore of gymnosperms?
The function of the spore in gymnosperms is to serve as a reproductive structure that can develop into a gametophyte. The spore undergoes mitotic division to produce a multicellular gametophyte, which then produces the gametes (sperm or eggs). The fusion of these gametes gives rise to the development of the next generation of gymnosperms.
Is the eye cell a cone cell?
Yes it is and there is also a rod cell
Why do gymnosperms and angiosperms not need flagellate sperm?
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 is the difference between the life cycle of ferns and the life cycle of humans?
The life cycle of a fern includes both a gametophyte and sporophyte generation. A diploid zygote formed on the gametophyte develops into a sporophyte, a fern. The sporophyte releases haploid spores that germinate into gametophytes. The life cycle of a conifer consists of male and female cones produced on an adult plant, the sporophyte. The male produces pollen grains that fertilize eggs retained within the female cone. The fertilized egg develops into a seed. When released and conditions are favorable, the seed germinates into a young sporophyte.
Is the female pine cone a sporophyte?
A pine tree is generally a Sporophyte - a multicellular, diploid, spore-producing organism. However, the created spores are haploid, and thus begin the gametophyte phase, in which the microspores (pollen) and megaspores (female receptors), will combine back into a gamete, and begin the sporophyte stage again. So, the pine tree is mostly sporophyte, but has very small gametophyte parts that create gametes. They're very small, but they're there.
What does the cone on your eye do?
Cones are the light sensors in your eye that sense the different wavelengths of colors. There are three different type of cone cell. An L cone, M cone, and an S cone.
Difference between rod cell and cone cell?
Rod cells are sensitive to dim light, while cone cells help you see colors.
What is the lifespan of a cone cell?
well there are about 4.5 million cone cells in the human retina.
What does cone cell look like?
A long comb.
