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Multiple Choice
Which scenario best describes the process of mitosis benefiting an organism?
A
A lizard regenerates its lost tail after an injury.
B
A sperm cell and an egg cell combine to form a zygote.
C
A bacterium divides to produce two identical daughter cells.
D
A plant produces pollen grains for fertilization.
Verified step by step guidance
1
Step 1: Understand the process of mitosis. Mitosis is a type of cell division that results in two genetically identical daughter cells from a single parent cell. It is primarily involved in growth, repair, and regeneration in multicellular organisms.
Step 2: Analyze the scenarios provided in the question. Each scenario describes a biological process, and you need to determine which one aligns with the purpose of mitosis.
Step 3: Evaluate the first scenario: 'A lizard regenerates its lost tail after an injury.' This involves the regeneration of tissues, which requires the production of identical cells to replace damaged ones. This is a direct benefit of mitosis.
Step 4: Evaluate the second scenario: 'A sperm cell and an egg cell combine to form a zygote.' This describes fertilization, which is a process involving meiosis, not mitosis. Meiosis produces gametes (sperm and egg cells) with half the genetic material, not identical cells.
Step 5: Evaluate the remaining scenarios: 'A bacterium divides to produce two identical daughter cells' and 'A plant produces pollen grains for fertilization.' The first describes binary fission, a process in prokaryotes, and the second involves meiosis for gamete production. Neither directly benefits from mitosis.