Reproduction
Reproduction in organisms, sexual reproduction in flowering plants, human reproduction, reproductive health.
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Take a full mock →Q1 · Reproduction · HARD
During oogenesis in humans, the first meiotic division is arrested at diplotene stage of prophase I until puberty, and then arrests again at metaphase II until fertilization. What is the total number of years the primary oocyte remains arrested in prophase I for a woman who has her first ovulation at age 13?
Q2 · Reproduction · MEDIUM
In a flowering plant, the megaspore mother cell undergoes meiosis to produce four megaspores. In the majority of angiosperms, which of the following accurately describes the fate of these megaspores?
Q3 · Reproduction · MEDIUM
During human spermatogenesis, primary spermatocytes undergo the first meiotic division to produce secondary spermatocytes. If a human primary spermatocyte has 92 chromatids just before meiosis I, how many chromatids will each secondary spermatocyte contain immediately after meiosis I?
Q4 · Reproduction · MEDIUM
In flowering plants, double fertilization is a unique process where one male gamete fuses with the egg cell and another fuses with the polar nuclei. If a plant species has diploid (2n) somatic cells with 24 chromosomes, what would be the chromosome number in the endosperm tissue?
Q5 · Reproduction · EASY
During oogenesis in humans, the primary oocyte completes its first meiotic division to form: