Science : Ch 08 – How do Organisms Reproduce

formation of single cell during sexual reproduction by fusion of nuclei of male and female gamates.

In Rhizopus fungus, the fne thread-like structures that spread on the surface of bread are called hyphae

After the pollen lands on a suitable stigma, a tube grows out of the pollen grain and travels through the style to reach the female ovary.

Genes are the unit of heredity DNA that determine genetic characters in an organism.

Menopause is a natural process at the age of 40s or 50s in case of human females. Menopause occurs when a women has not have her menstrual cycle for 12 consecutive months and can no longer become pregnant naturally.

Umbilical cord is responsible for exchange of nutrients, oxygen and waste products between the embryo and the mother’s body .

Hepatitis is not a sexually transmitted disease. It is a water-borne viral disease compared to other options.

The gametes are reproductive cells. They contain only half the number of chromosomes as compared to the normal cells.

Reproduction is linked to the stability of populations of species., but variation is useful for the survival of species.

Bisexual flowers contains both reproductive organs, male & female.