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Is sperm considered as antigen at the time of fertilization?
No, sperm is not considered an antigen at the time of fertilization. Antigens are substances that the immune system recognizes as foreign and can trigger an immune response. Sperm is a normal component of reproduction and does not elicit an immune response during fertilization.
Why the separation of substances is necessary?
it is important to separate and purify substances so that: 1.we can get them in their pure form. 2.to remove undesirable particles from them.
What prepares plants for fertilization?
Plants prepare for fertilization by producing specialized reproductive structures such as flowers, which contain the male and female reproductive organs necessary for fertilization to occur. These structures facilitate the transfer of pollen (containing male gametes) to the ovules (containing female gametes) for fertilization to take place. Additionally, plants rely on pollinators such as insects, birds, or wind to transport pollen between flowers for successful fertilization.
Why is clitellum necessary for oligochaetes and hirudinea but not necessary for polychaetes?
The clitellum is necessary for oligochaetes and hirudinea because it secretes a cocoon where the eggs are deposited and fertilized. It is not necessary for polychaetes because they typically have other methods of reproduction, such as external fertilization or larvae development in the water column.
Which substances are necessary for the synthesis of most materials in organisms?
enzymes
What is the function of the egg cell membrane in protecting and regulating the passage of substances into and out of the egg cell during fertilization?
The egg cell membrane acts as a protective barrier that controls the movement of substances in and out of the egg cell during fertilization. It helps regulate the passage of nutrients, ions, and other molecules necessary for the development of the embryo, while also preventing harmful substances from entering the cell.
Why was internal fertilization necessary for reptiles?
Because.
Why do boys have testes?
Men have testes because they produce sperm, which is necessary for the fertilization of ova. This fertilization results in the development of a fetus.
What are defined as necessary food substance?
Are defined as necessary food substances
What substances(pigament) is necessary for photosynthesis?
chlorophyll
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.
Is sperm considered as antigen at the time of fertilization?
No, sperm is not considered an antigen at the time of fertilization. Antigens are substances that the immune system recognizes as foreign and can trigger an immune response. Sperm is a normal component of reproduction and does not elicit an immune response during fertilization.
Why is necessary to release so many sperm at a time?
to ensure the fertilization of the egg with the mostcompatible sperm
What fluid carries different substances and cells?
Blood carries necessary substances to various parts of the body.
What substances are necessary to be able to clot blood?
vasopressin is needed
Why do endosperm formation does not occur until fertilization take place?
Endosperm formation is triggered by fertilization because it involves the fusion of the two sperm cells with different nuclei in the embryo sac, leading to the triploid (3n) condition necessary for endosperm development. Without fertilization, the endosperm would not receive the necessary genetic contribution to develop properly and support the growing embryo.
What do sperm contribute during fertilization?
Sperm contribute genetic material to fertilization, specifically the father's DNA, which combines with the mother's DNA to create a unique genetic blueprint for the offspring. Additionally, sperm provide the necessary enzymes to penetrate the egg and trigger the process of fertilization.
