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In plants, meiosis occurs in the reproductive organs known as the anthers (in male parts) and ovules (in female parts). Fertilization, where the male gamete fuses with the female gamete to form a zygote, typically occurs in the ovules.
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Is meiosis necessary before fertilization Can occur?
Yes, meiosis is necessary before fertilization can occur because meiosis is the process by which gametes (eggs and sperm) are formed. During meiosis, the cell's chromosome number is halved, so that when the egg and sperm fuse during fertilization, the resulting zygote will have the correct number of chromosomes.
What is apomixis?
Apomixis is a type of asexual reproduction in which seeds are produced without fertilization. It allows for the formation of genetically identical offspring to the parent plant. This process can be advantageous for plant breeding and propagation as it maintains desirable traits.
Does sexual life cycles differ with respect to the relative timing of meiosis and fertilization?
Yes, sexual life cycles can differ based on the relative timing of meiosis and fertilization. In some organisms, such as animals, meiosis and fertilization occur separately and alternately, resulting in a diploid-dominant life cycle. In contrast, in some algae and fungi, meiosis and fertilization can occur in close succession, leading to a haploid-dominant life cycle.
Explain the two ways by which seeds develop without fertilization?
Seeds can develop without fertilization through apomixis, where the embryo is formed without meiosis or fertilization, producing a genetic clone of the parent plant. Another way is through parthenocarpy, where a fruit develops without fertilization, but the seeds within it are not viable.
Is a diploid organism formed in the fertilization or meiosis during sexual reproduction?
A diploid organism is formed during fertilization when a haploid sperm cell fertilizes a haploid egg cell to create a zygote with a complete set of chromosomes. Meiosis is the process that produces haploid gametes (sperm and eggs) in preparation for fertilization.
What type of division occur to produce an embryo plant from the diploid zygote formed after fertilization?
meiosis
What type of division occurs to produce an embryo plant the diploid zygote formed after fertilization?
meiosis
What is the correct sequence of development in a flowering plant?
Pollination, fertilization, seed formation, seed germination
Why can plants vary from the plant parent?
Due to genetic recombination during gamete formation by meiosis and fusion of such gametes during fertilization.
What is the order of fertilization sex cells meiosis zygote mitosis?
The order would be: Meiosis -> sex cells -> fertilization -> zygote -> mitosis Meiosis creates sex cells, called gametes, which combine during fertilization to create a zygote. The zygote then undergoes mitosis.
Is meiosis necessary before fertilization Can occur?
Yes, meiosis is necessary before fertilization can occur because meiosis is the process by which gametes (eggs and sperm) are formed. During meiosis, the cell's chromosome number is halved, so that when the egg and sperm fuse during fertilization, the resulting zygote will have the correct number of chromosomes.
What is apomixis?
Apomixis is a type of asexual reproduction in which seeds are produced without fertilization. It allows for the formation of genetically identical offspring to the parent plant. This process can be advantageous for plant breeding and propagation as it maintains desirable traits.
What are the steps in the diploid life cycle?
The steps in the diploid life cycle are meiosis, to gametes, to fertilization, to diploid, to reproductive cell. The main steps are Meiosis and Fertilization.
What are the two generations of alternation of generations?
fertilization and meiosis
The cell resulting from fertilization divides by the process of what?
meiosis
Does sexual life cycles differ with respect to the relative timing of meiosis and fertilization?
Yes, sexual life cycles can differ based on the relative timing of meiosis and fertilization. In some organisms, such as animals, meiosis and fertilization occur separately and alternately, resulting in a diploid-dominant life cycle. In contrast, in some algae and fungi, meiosis and fertilization can occur in close succession, leading to a haploid-dominant life cycle.
Explain the two ways by which seeds develop without fertilization?
Seeds can develop without fertilization through apomixis, where the embryo is formed without meiosis or fertilization, producing a genetic clone of the parent plant. Another way is through parthenocarpy, where a fruit develops without fertilization, but the seeds within it are not viable.
