BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cell division (mitosis & cytokinesis)
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Meiosis (gametes are produced)
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Cellular differentiation (cells become specialized types with specific functions)
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The single-celled zygote continuously increases in size
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New cells are obtained by the zygote from its local environment
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Detailed explanation-1: -In multicellular organisms individual cells grow and then divide via a process called mitosis, thereby allowing the organism to grow.
Detailed explanation-2: -Mitosis is important to multicellular organisms because it provides new cells for growth and for replacement of worn-out cells, such as skin cells. Many single-celled organisms rely on mitosis as their primary means of asexual reproduction.
Detailed explanation-3: -The zygote undergoes mitosis to form two identical cells that remain attached. This takes place about 36 hours after fertilization. Mitosis then occurs more frequently.
Detailed explanation-4: -During fertilization the sperm and egg unite to form a single cell called the zygote which contains chromosomes from both the sperm and egg. The zygote undergoes mitosis to begin development of the human embryo which eventually becomes a baby.
Detailed explanation-5: -Mitosis causes embryonic development. Using mitosis, the zygote develops to form an embryo. In contrast, the role of meiosis during embryonic development is to produce the sex cells, or gametes, which are the fundamental cells that combine to form an embryo.