BIOLOGY - Evolution -Competition & Natural Selection

The video explains the importance of speed for cheetahs in the African savanna, where they compete with predators and prey. It introduces Charles Darwin's theory of natural selection, highlighting how organisms evolve through competition and variation. The role of genes in inheritance and natural selection is discussed, along with the example of antibiotic resistance in bacteria, illustrating adaptation and survival of the fittest. The video concludes with key takeaways on variation and its impact on survival and medicine.

Why is speed crucial for cheetahs in their natural habitat?

• To migrate faster

• To escape from humans

• To climb trees quickly

• To outstrip prey and predators

What is the main idea behind Darwin's theory of natural selection?

• All species are fixed and unchanging

• Species evolve only through human intervention

• Organisms evolve through competition and survival of the fittest

• Evolution occurs randomly without any specific reason

How did the discovery of genes help explain Darwin's theory?

• It proved that evolution is a myth

• It demonstrated that all organisms have the same genes

• It showed that characteristics are passed through genes

• It revealed that genes do not affect evolution

What challenge does antibiotic resistance pose to modern medicine?

• It leads to the extinction of bacteria

• It eliminates the need for antibiotics

• It causes some bacteria to withstand antibiotics

• It makes all bacteria harmless

What is an example of natural selection in action mentioned in the video?

• Birds migrating south

• Cheetahs running fast

• Trees growing taller

• Bacteria developing antibiotic resistance