Biology IGCSE: Reproduction & Inheritance

Front

What is the difference between Asexual and Sexual Reproduction?

Back

Asexual reproduction involves mitosis and produces genetically identical copies, while sexual reproduction involves the combination of sperm and egg to create a zygote.

Front

Define Zygote and Embryo.

Back

A zygote is a diploid cell formed from the fusion of sperm and egg, while an embryo is the zygote after it begins to divide.

Front

What are the advantages and disadvantages of Sexual Reproduction?

Back

Advantage: Introduces variation. Disadvantage: Slower process with limited offspring.

Front

What are the advantages and disadvantages of Asexual Reproduction?

Back

Advantage: Produces many offspring quickly. Disadvantage: No variation, making them susceptible to the same environmental pressures.

Front

List three features of Insect Pollinated Plants.

Back

1. Bright colored flowers 2. Sweet nectar 3. Sticky pollen

Front

List three features of Wind Pollinated Plants.

Back

1. No bright colors 2. Stigma exposed to air 3. Light pollen

Front

Describe the process of fertilization in plants.

Back

Pollen grain lands on stigma, grows a pollen tube into the ovary, travels down the tube, and fertilizes the egg, leading to the formation of fruit and seeds.

Front

What is the purpose of Amniotic Fluid?

Back

It protects the developing fetus.

Front

What is the role of the Placenta?

Back

It allows nutrients and oxygen to pass from the mother to the fetus.

Front

What are the functions of Oestrogen?

Back

It thickens the uterus lining, increases breast size, triggers uterus development, and causes eggs to mature.