I/GCSE Biology - Evolution of life

In I/GCSE Biology, it's crucial that you should understand the evolution of life! So, let's get started! 😆

Fossil 👣

• the remains of an organism that lived in the past found preserved in rock, or evidence of organisms having been there (such as footprints)
• Estimate of 30 million species on earth today

In I/GCSE Biology, make sure you understand the meaning of the following terms! 🥰

Microorganism

• single-celled organisms, such as bacteria

Plants

• organisms that photosynthesis, mostly multi-celled

Animals

• mostly multi-celled organisms that get their energy from eating other organisms

Classification

  ➡️ a system for grouping organisms according to their characteristics.

Ecological relationship

  ➡️ the relationship of an organism with other organisms and their physical environment in an ecosystem

Evolutionary relationship

  ➡️ the existence of similar characteristics in different organisms because they evolved from a common ancestor

Common ancestor

   ➡️ an organism or species that is a shared ancestor (in evolutionary terms) of two or more later organisms or species

• Fossils ➡️ evidence of organism lived in past
• New fossil discovered ➡️ scientists use characteristics to group fossil with organisms today
• Fossils grouped in age ➡️ see change over time
• Change in species over time ➡️ evolution
• Evolution ➡️ change in characteristics of species over time
• All species living now evolved from very simple cells ➡️ scientists

And we're done with this topic! Well Done!

CLICK HERE TO LEARN MORE ABOUT OUR I/GCSE BIOLOGY COURSES

Drafted by Alyssa (Biology)

References:

1. "Fossil Of Hydrocephalus Briareus", https://media.istockphoto.com/photos/fossil-of-hydrocephalus-briareus-from-cambrian-period-found-in-picture-id683078288
2. "Microorganisms and Microbes", https://i0.wp.com/www.bio-oxygen.com.au/wp-content/uploads/2016/05/bacteria-300x188.jpg?resize=300%2C188
3. "Plants". Photo from the internet.
4. "Animals". Photo from the internet
5.  "Learn about Carnivorous Plant Taxonomy", https://carnivorousplantresource.com/wp-content/uploads/2017/03/Venus_flytrap_taxonomy.jpg
6. "Ecological Relationships", https://media.nationalgeographic.org/assets/photos/000/266/26619.jpg
7. "Fossil Evidence", https://sites.google.com/site/sjcyear12biology/_/rsrc/1468542039123/fossil-evidence/Fossils%202.jpg