Cleavage differs from mitosis in that……
a) it occurs in all body cells
b) it occurs only in zygote
c) it results into identical cells
d) it results into haploid cells
After 36 hours of fertilization, the first cleavage division produces two identical cells……..
a) blastomeres
b) micromeres
c) macromeres
d) blastocysts
Explanation: a cell produced during cleavage of a fertilized egg. called also cleavage cell.
Cleavage is a period of fairly rapid mitotic divisions of the zygote following…….
a) gastrulation
b) morulation
c) fertilization
d) neurolation
Explanation: the fusion of egg and sperm is called fertilization
After how many hours after fertilization, the first cleavage division takes place?
a) 12
b) 24
c) 36
d) 48
Explanation: these two cells are identical and are called blastomeres. These two cells divide to produce four cells, eight cells and so on
As a result of cleavage, a loose collection of cells that form a berry-shaped cluster called………has been formed.
a) morula
b) gastrula
c) neurula
d) zygote
Morula
consists of ………or more loose cells forming berry-shaped cluster.
a) 2
b) 4
c) 8
d) 16
