Sexual Reproduction Of Human

Question 1

Suggest why only one functional female gametes is produced as a result of meiosis (2)

Answer 1

. Polar bodies produced
. Function gametes retain most of cytoplasm

Question 2

Explain cell cleavage

Answer 2

. Splitting of zygote cells to form new cells

Question 3

Explain blastocyst

Answer 3

Hollow ball of cells

Question 4

Explain implantation

Answer 4

The embedding of the blastocyst into the endometrium

Question 5

State how the secondary oocyte usually prevent the entry of more than one sperm and suggest a reason why there an increase risk with ivf (2)

Answer 5

. Cortical reaction + zona pellicuda hardens
. Fewer developed cortical granules

Question 6

Using ur knowledge why is the fertilisation and inflation explain why the disease is needed (3)

Answer 6

. Fertilisation normally in fallopian tube
. Embryo need to reach uterus
. If embryos put in uterus immediately endometrium will not be fully developed
. Embryo will not survive