The middle piece of the sperm contains
Centriole
Nucleas
Proteins
Mitochondria
In human females, the eggs are
Alecithal
Macrolecithal
Mesolecithal
Microlecithal
Which one of the following statement with regard of the embryonic development in humans is correct?
Cleavage division results in a hallow ball of cells called morula
Cleavage in mammalian ova is unequal holoblastic and horizontal
Rearrangement of blastomeres, acentral cavity is formed inside the morula
Cleavage divisions bring about considerable increase in the mass of protoplasm
An acromian process is characteristically found in
Skull of frog
Sperm of mammals
Pelvic girdle of mammals
Pectoral girdle of mammals
Formation of primitive streak in the chick embryo is the first sign of
Neurilation
Notogenesis
Gastrulation
Blastulation
In rabbit, man and other placental mammals the organ in which fertilization of ovum is,
Ovary
Uterus
Vagina
Fallopian tube
Anti fertilizin is present on
Egg
Tail
Ovum
Spermatozoa
Heart of crocodile is
Single-chambered
Two-chambered
Three-chambered
Four-chambered
Polar bodies are produced during the formation of
Sperm
Oogonium
Spermatocytis
Secondary oocyte
In man, sperms contain autosomes and
Only y- chromosome
Only x- chromosome
Both x- and y- chromosome
Either x- or y- chromosomes