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First pollen falls from a male cone onto a female cone. In time a sperm cell and an egg cell join together in an ovule on the female cone
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∙ 11y ago
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∙ 13y agoA pollen grain develops from a cell in the stamen.
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∙ 11y agothe structure that develops into a pollen grain is the ***************, and also ******.
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∙ 9y agoMicrospores develop into pollen grains.
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∙ 14y agoThe answer is the stigma
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∙ 10y agoMale gametes
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∙ 11y agoHairy legs of honey bees and moths
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∙ 16y agoAnther
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How can you contrast a pollen grain and a seed?
Pollen grain after meiosis in the microspore mother cell and has haploid set of chromosomes. A seed develops from ovule after fertilization, in which the number of chromosomes get doubled. Pollen grain is unicellular, microscopic structure, a seed is multicellular macroscopic structure.
How does pollen grain compare to a microspore?
microspore when develops a exine around it, is called a pollen grain.
How do pollen grains reach the pistil?
The pollen grain reach the pistil either by self-pollination or by cross pollination by pollinators.
What is difference between ungerminated pollen grain and germinated pollen grain?
The germinated pollen grain is empty of the male gamete nucleus.
How pollen grains reach pistil?
Pollen grains reach the pistil through pollination. The pollen grains are placed on the stigma of the carpal, and it transfers by wind, insects, built in mechanical discharge, and men. When the pollen lands on the stigma, it starts a series of chemical reactions that allow the pollen grain to produce a structure called the pollen tube. At the same time, the generative nucleus divides and produces two sperm nuclei. The pollen grain with the pollen tube and three nuclei is a mature gametophyte. The pollen tube works its way through the style of the carpal and touches the micropyte of the ovule. The sperm nuclei enter the embryo sac and fertilizes the egg and two polar nuclei, referred to as double fertilization. The fertilized egg develops into the immature seed plant, and the central cell develops into the endosperm, or food storage ares, of the seed.
How can you contrast a pollen grain and a seed?
Pollen grain after meiosis in the microspore mother cell and has haploid set of chromosomes. A seed develops from ovule after fertilization, in which the number of chromosomes get doubled. Pollen grain is unicellular, microscopic structure, a seed is multicellular macroscopic structure.
How does pollen grain compare to a microspore?
microspore when develops a exine around it, is called a pollen grain.
What structure will pass down the pollen tube?
the pollen grain
What structure developes into pollen grain?
Microspore
The structure that grows from a pollen grain to an ovule and enables a sperm to pass directly to an egg?
pollen tube
Pea plants contain a male reproductive structure called the?
pollen grain
How do pollen grains reach the pistil?
The pollen grain reach the pistil either by self-pollination or by cross pollination by pollinators.
How does the structure of the pollen grain helps it to move from one flower to another?
i don't f*** know
Do Dicot have pollen grain?
yes Dicot have pollen grain and in Dicots pollen grain possess 3 germ pores
How does a pollen grain travel through the parts of a flower to finally become a seed?
The pollen grain released from the anther lobe during anthesis reaches the stigma by pollination. Thereafter, it germinates on the compatible stigma to send pollen tube to the micropyle of the ovule inside the ovary. The male gametes from the pollen grain are transferred to the embryo sac for fertilization and the ovule is converted into a seed when zygote develops into an embryo.
A structure grown by a pollen grain that contains two sperm nuclei is called what?
The two nuclei found inside each pollen grain are called tube nucleus and germ nucleus.
The transfer of a pollen grain to the pistil is called?
The transfer of pollen grains to the female reproductive structure, the pistil, is called pollination. This transfer can be mediated by the wind.
