division of labour Flashcards
define division of labour
refers to sharing of work
reason for division of labour
each organelle has a different role where all work together to allow cell to function efficiently
prevents being overworked and ensures tasks are done efficiently
tissues
group of specialised cells which work together to carry out a particular function in an organism
list 2 examples of tissues in plant
vascular tissues - xylem, phloem
transport of water minerals food
photosynthetic tissues - palisade cells
photosynthesis
list 3 examples of tissues in humans
muscle tissue - muscle cells - movement
nerve tissue - nerve cells - sending messages
blood tissue - red white blood cells platelets - transport
organs
made up of different tissues which work together to carry out a particular function in organism
3 examples of organs in plants
leaf - epidermis palisade tissue spongy mesophyll filled tissue - photosynthesis
stem - epidermis cortex vascular tissue - support and transport
root - epidermis cortex vascular tissue - anchorage and absorption
3 examples of organs in humans
heart - cardiac muscle blood connective tissue - plump blood around body
stomach - muscle glandular tissue connective tissue - digestion
skin - epidermis dermis connective tissue - protection and temperature regulation
systems
made up of different organs which work together to carry out a particular function in organism
list 2 examples of systems in plants
shoot system - stem leaves flowers - photosynthesis transport reproduction
root system - organs primary roots lateral roots - anchorage absorption storage
list 2 examples of systems in humans
respiratory system - trachea lungs - gaseous exchange brings oxygen in and co2 out
digestive system - mouth esophagus stomach intestines - digestion
define electron micrograph
a micrograph or image of a specimen taken using an electron microscope
some organelles can only be seen under an electron and not under a light microscope
