What are unicellular organisms?
Organisms made up of a single cell.
What are multicellular organisms?
Organisms made up of multiple cells.
What are the four main levels of biological organization?
Cells, Tissues, Organs, and Organ Systems.
What is the smallest structural and functional unit of life?
Cells.
Give an example of animal tissues.
Bone tissue and blood tissue.
Name two plant tissues.
Mesophyll and epidermal tissue.
What are organs?
Structures formed by groups of similar tissues working together to perform specific functions.
Provide an example of plant organs.
Leaves, stems, flowers, and roots.
Provide an example of animal organs.
Skin, stomach, and eyes.
What are organ systems?
Groups of related organs that work together to perform specific tasks.
Name a plant organ system.
The root system or the shoot system.
Name an animal organ system.
Digestive, circulatory, or nervous systems.
What are epithelial tissues in animals responsible for?
Protecting and lining body surfaces.
What is the function of blood tissues?
Transporting oxygen, nutrients, and waste products throughout the body.
What are vascular tissues in plants?
Tissues that transport food and water, including xylem and phloem.
Name a type of strengthening tissue in plants.
Sclerenchyma, collenchyma, or parenchyma.
List one advantage of multicellular organism complexity.
Division of labor and specialization among cells and tissues.
List one disadvantage of multicellular organism complexity.
Cells cannot survive independently and rely on others.
Why do multicellular organisms face slower diffusion rates?
Due to a smaller surface area-to-volume ratio and greater distances within the body.
What is a challenge of reproduction in complex organisms?
It becomes more complex and slower.
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