plant tissue ,organs and systems

• What are the different levels of organization within a multicellular organism like a human?


  Organelles, cells, tissues, organs, organ systems, and organisms
• What are organelles also called?


  Subcellular structures
• What is the role of organelles in a cell?


  Each organelle has a specific role to play
• Name three examples of organelles.


  Nucleus, ribosomes, and mitochondria
• What do we call different types of cells that have specialized functions?


  Specialized cells
• Give examples of specialized cells.


  Epithelial cells, muscle cells, and glandular cells
• How can we define tissues in a multicellular organism?


  A group of similar cells that work together to carry out a particular function
• What type of tissue is formed by lots of epithelial cells?


  Epithelial tissue
• What is the function of epithelial tissue?


  To cover the body's surfaces
• What type of tissue is formed by muscle cells?

  Muscle tissue
• What is the primary function of muscle tissue?


  To contract and relax to move different parts of the body
• What type of tissue is formed by glandular cells?


  Glandular tissue
• What is the role of glandular tissue?


  To make and secrete chemicals like enzymes and hormones
• How is an organ defined?


  A group of different tissues that work together to perform a particular function
• What types of tissues might work together to form an organ like the stomach?

  Epithelial tissue, muscular tissue, and glandular tissue
• What is the function of the stomach as an organ?


  To kill microorganisms and break down proteins
• What is an organ system?


  A group of organs that work together to perform a particular function
• Which organs form the digestive system?


  The stomach, pancreas, and liver, along with other organs
• What is the primary role of the digestive system?


  To digest food and absorb nutrients
• Name two other organ systems besides the digestive system.

  The cardiovascular system and the reproductive system
• What is the highest level of organization in a multicellular organism?


  The whole organism
• How many different organ systems are there in the human body?


  About 12 different organ systems
• Name three examples of organs in the human body.


  Skin, lungs, and liver
• What are some examples of organ systems in the human body?

  Immune system, nervous system, respiratory system, endocrine system, and urinary system
• What are the levels of organization in a multicellular organism?


  • Organelles
  • Cells
  • Tissues
  • Organs
  • Organ systems
  • Organism
• What is the relationship between tissues and organs?


  • Tissues are groups of similar cells
  • Organs are groups of different tissues
  • Both perform specific functions
• What is the function of specialized cells?


  • Perform specific roles in the body
  • Include epithelial, muscle, and glandular cells
• What is the role of the digestive system?


  • Digests food
  • Absorbs nutrients
  • Involves organs like the stomach, pancreas, and liver