To prevent more than one sperm from entering the egg.
What is oocyte?
An oocyte , or ovocyte is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis, forming oogonia. During oogenesis, the oogonia become primary oocytes. An oocyte is a form of genetic material that can be collected for cryoconservation.
When the sperm and egg fuse it triggers a release of calcium ions, which cause the cortical granules inside the egg to fuse with the plasma membrane. As they fuse, these granules release their contents outside of the cell, toward the remains of the zona pellucida.
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The Stereo microscope, also called a dissecting microscope, has two optical paths at slightly different angles allowing the image to be viewed three-dimensionally under the lenses. Stereo microscopes magnify at low power, typically between 10X and 200X.
When cool, dense air from over the water flows inland, it's called a sea breeze.
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Answer:
B; Photosynthesis
Explanation:
Here, we want to get the process that helps produce glucose and oxygen
The process here is called Photosynthesis
It is the process by which green plants use chloropyhll iin them, catalyzed by sunlight to produce energy in form of glucose
