Class notes
Organisms to ecosystems class notes
Notes taken to prepare for exam 2. Includes parts from the book and lecture.
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1.
What is the difference between simple multicellular organisms and complex multicellular organisms?
Answer: Simple multicellular organisms and complex multicellular organisms differ in size, complexity, organizational structure, and how they reproduce.
2.
How are plants and animals similar and different?
Answer: Similarities: Both plants and animals are composed of cells that have specialized functions, they both pass down genetic information, and they both respond to external stimuli. Differences: Plants are autotrophs (produce their own food via photosynthesis), animals are heterotrophs (consume external food for energy). Plants are fixed in their structure and they reproduce differently than animals.
3.
Why is the evolution of alternation of generations and adaptation for reproduction on land?
Answer: It helps to overcome the challenges of reproduction in a terrestrial environment and increases their chance of survival/reproduction.
4.
What are 2 advantages of seeds over spores in terms of the probability that they next sporophyte generation will become successfully established?
Answer: Seeds have protective coverings and nutrient reserves. They can remain dormant for long periods of time. These adaptations have allowed plants to diversify and evolve in a wide range of environments.
5.
Tell one way that plants can reproduces asexually. How does this method help to disperse offspring?
Answer: One way is vegetative propagation. This method helps to disperse offspring by allowing the plants to grow in close proximity to the parent. It also allows plants to reproduce without fertilization and disperse offspring in a wider area using air or water.
6.
Describe the general process of photosynthesis
Answer: CO2 goes in through stomata, O2 and H2O go out. The end goal is to produce glucose!
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