URINARY SYSTEM AND MALE FEMALE REPRODUCTIVE SYSTEMS
FEMALE REPRODUCTIVE TRACT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 ovum; 2 polar bodies
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2 ova; 2 polar bodies
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1 ovum; 3 secondary oocytes
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4 ova
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Detailed explanation-1: -The first polar body may divide to form two second polar bodies. On further division(meiosis II), secondary oocytes again form a mature ovum and one polar body. Therefore, one ovum and three polar bodies are formed after one oogenesis cycle.
Detailed explanation-2: -Assertion :Mainly two polar bodies are released during each oogenesis in human Reason: One primary oocyte form two ova.
Detailed explanation-3: -The smaller cell is called the first polar body, and the larger cell is referred to as the secondary oocyte. During the second division of meiosis, a similar unequal cytokinesis takes place. Most of the cytoplasm is retained by the mature egg (ovum), and a second polar body receives little more than a haploid nucleus.