Natural parthenogenesis is found in
Housefly
Honey bee
Drosophila
All of these
Related Questions
Which chemical event of fertilization involves the presence of hyaluronidase enzyme?
Acrosomal reaction
Cortical reaction
Amphimixis
Activation of egg
After implantation, finger-like projections on the trophoblast are called …A…. which are surrounded by …B… and maternal blood.
Here A and B refers to
A: chorionic villi, B: lacunae
A: amnion, B: yolk sac
A: umbilical cord, B: amniotic fluid
A: allantois, B: chorion
If the size of a fertilized egg of frog is compared with the size of its blastula and gastrula stages, which of the following observations will be correct?
There is a progressive increase in size from zygote to blastula to gastrula
All the three will be of the same size
Zygote will be smaller, while blastula and gastrula will be larger
Gastrula will be larger, while zygote and blastula will be of same size
Which physiological change is essential for sperm to gain the ability to fertilize an egg?
Capacitation
Acrosome reaction
Spermiogenesis
Spermatogenesis
In implantation the blastocyst attached to the …… wall of uterus
Endometrium
Myometrium
Perimetrium
Mesoderm
Human egg is
Alecithal
Centrolecithal
Telolecithal
Megagalecithal
Test tube baby means a baby born when
The ovum is fertilized externally and thereafter implanted in the uterus
It develops from a non-fertilized egg
It is developed in a test tube
It is developed through tissue culture method
Cleavage is the rapid mitotic division. It occurs in
Gametes
Zygote
Sperm
Ova
Superficial meroblastic cleavage occurs in
Reptiles
Birds
Mammals
Insects
What structure releases enzymes to help the sperm penetrate the ovum?
Nucleus
Mitochondria
Acrosome
Flagellum
