As a result of cleavages, if blastomeres are symmetrically placed around the polar axis the type of cleavage is known as
Spiral
Discoidal
Biradial
Radial
It's Obvious
Which cell organelle is absent in human sperm?
$A$ : Most birds possess only the left ovary and left oviduct for conveying the ovum released from the ovary. $R$ : The avian ovary does not form a corpus luteum from the ruptured ovarian follicle which undergoes rapid shrinkage
What is true about cells during cleavage
The sperm penetrates the ovum mainly
Which of the following provides nutrition to sperm?
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