Animal life cycle, process skills, Human reproduction, Animals Flashcards
Fair test key words
It is to ensure that the (CV) is not affecting the (DV)
Control set-up keywords
It is to confirm that the (DV) is only due to the (IV).
Identify and classify human male and female parts of the reproductive system
Male: Testes, Penis
Female: Ovary, Uterus/Womb(After fertilization, fetus develops here), Fallopian tube(Fertilization takes place here), Vagina
A layer of oil was added to the surface of the water in which mosquito eggs were laid.
Explain how the layer of oil helps to reduce the number of mosquitoes.
The layer of oil blocks the breathing tube of the larva from reaching the air, thus preventing the larva from taking oxygen.
The young of an animal does not resemble its adult and lives in a different habitat as the adult. How is this an advantage?
They have different predators and do not need to compete with each other for food, so more of the animal will survive.
Some genetically modified male Aedes mosquitoes were released into the environment to tackle the rise in dengue cases. When these male mosquitoes mate with wild female mosquitoes, the eggs produced will not hatch into larvae.
How does this method reduce the number of Aedes mosquitoes?
Suggest a reason why this method cannot wipe out the entire Aedes mosquito population.
Fewer eggs hatch so there are fewer larva to develop into fewer pupae and then into fewer adult mosquitoes.
There will still be male mosquitoes in the wild that can still mate with the female mosquitoes and produce young.
In a certain medical condition, a women’s Fallopian tubes become blocked. Explain how having this medical condition decreases the chance of a women becoming pregnant.
The sperm cannot reach the egg and fertilization cannot take place
State an advantage for butterflies to lay their eggs on leaves.
Food is readily available when the larva hatch from the egg.
How do you increase the accuracy and reliability of an experiment.
Accuracy: Use scientific tools(eg electronic balance, thermometer)
Reliability: Repeat the experiment and find the average
Animal A breathes through its moist skin, has gills to breathe underwater, and has fins to swim and walk on land.
Give 2 reasons why it can be classified as a fish.
Give 2 reasons why it can be classified as a amphibian.
Animal A has gills and fins which are characteristics of a fish. Thus it can be classified as a fish.
Animal has moist wet skin and can live on both land and water, which are characteristics of an amphibian. Thus it can be classified as an amphibian
