A park ranger wants to increase the number of fragrant, sweet smelling flowers in the park. In the park, there are very few plan
ts with fragrant, sweet smelling flowers. Scientists think this is because plants with fragrant, sweet smelling flowers are often eaten by animals in the park before they can reproduce. The park ranger is planning to select only individuals of this plant species with fragrant, sweet smelling flowers to breed. The trait of fragrant, sweet smelling flowers is recessive (ff) in the species of plant. The goal is that all of the offspring will have fragrant, sweet smelling flowers, which the ranger can plant in the park. (AKS 3d, DOK 3)
The immune system acts as a defense system of the body. It fights against bacteria, viruses and any other disease causing pathogens. Some chemicals can weaken the immune system and make them vulnerable.
