
Niki - Structure of Living Things
Presentation
•
Science
•
4th Grade
•
Medium
+2
Standards-aligned
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11 Slides • 9 Questions
1
Structure of
Living Things
2
structure
anything made up of a number of parts
held together in a particular way
3
external structures
are found outside of the body that
help the organism to survive, defend, and reproduce
4
external animal parts:
antenna, wings, scales, skin, arms
legs, flippers, webbed feet, hooves
reproductive parts and more external parts
5
external plant parts:
roots, stem, leaves, flowers, petals
thorns, seeds, branches, bark
reproductive parts and more
6
internal structures
are the inner pieces and parts that keep organisms alive,
help them grow, respond, and reproduce
7
internal animal parts:
brain, spine, heart, lungs, gizzard
nerves, arteries, veins, glands
bladder, kidneys, intestines and more
8
internal plant parts:
epidermis, mesophyll, stomata
xylem, phloem, vascular bundles,
hypodermis, cambium, pith and more
9
Multiple Select
Do these structures belong to external or internal parts?
xylem, chlorophyll, lungs, tongue
external
internal
10
animals and plants have internal and external structures
that function to support survival, growth, behavior, and reproduction
11
examples of external functions
claws - dig, attack predators, hold prey to eat
wings - flapping can attract a mate, escape, help it to get food
rotating head - helps it to find food
scales - camouflage against predators
flowers - attract pollinators, location of reproductive parts
stems - provide support to the plant
thorns - protect plant against predators
12
examples of internal functions
forked tongue - enhances sense of smell to find food
skeleton - supports internal organs, growth of the body
stomach - breaks down food for the organism
nerves - receive information about sensations and responses
ovaries - help to reproduce
xylem and phloem - carry nutrients and water up a plant stem
chloroplast - turn water, carbon dioxide, and light into sugar and oxygen
13
Multiple Choice
An alligator's external structure
has nostrils and ears that close up under water
uses webbed feet to swim
has dark skin to blend into its surroundings
all of the above
14
Multiple Choice
Does the structure pictured help the animal function in growth, defense or reproduction?
Image: Porcupine Spines
growth
defense
reproduction
15
Multiple Choice
Does the structure pictured help the animal function in survival, reproduction, or growth?
Image: Dolphin's tail
survival
reproduction
growth
16
Multiple Choice
The spotted fur of a leopard and spotted skin of a leopard gecko are shown in the photographs below.
How do these body coverings help organisms survive in their environments?
They help organisms find food.
They help organisms look like another animal in its environment.
They help organisms eat food quickly.
They help organisms blend into their surroundings.
17
Multiple Choice
Brightly colored parts of flowers that attract insects and help flowers reproduce.
petals
pistils
stamen
filaments
18
Multiple Choice
Why does a cactus have prickly spines?
defense against predators
survive by retaining water
both of these
19
Multiple Choice
What is the job of plant's roots?
provide support
anchor it to the soil
protect the plant's stem
absorb light for photosynthesis
20
Multiple Choice
Dandelion seeds are light enough to be moved long distances by the wind. What is the function of the seeds?
reproduce and grow where they land
find food for the roots
defense against birds coming to eat the seed
Structure of
Living Things
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