science vocabulary third grade goal 1. seed first stage of growth in a plant, a tiny plant packaged...
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Science Vocabulary
Third gradeGoal 1
Seed
First stage of growth in a plant, a tiny plant packaged in a seed coat
seed coat
The protective outer layer of a
seed.
cotyledon
Sometimes called “seed leaves,” they are the first plant part you see when a seedling pokes its head out of the ground.
They help keep the new seedling fed until it can make its own food.
embryo
The baby plant
within the seed.
seedling
a young plant
flower
The reason why we grow many plants. This is the
fancy part that really looks good and
sometimes smells good, too.
petal
Individual part or single part of the
outer part of a flower
root
This part of the plant grows underground and is not
seen. They are important because they help to hold the plant up and bring in
food and water.
stem
Connects the roots with the leaves of the plant and supports the plant
above ground
leaves
Plant parts that grow out of the stem
sprout
begin to grow, young plant growth
germination
When a small plant breaks out of the seed
and begins to grow
photosynthesis
A process by which a plant produces its food
using energy from sunlight, carbon dioxide from the air, and water
from the soil.
chlorophyll
The substance that gives plants their
green color.
tuber
The part of the stem found underground, but
is fat. It is a food storage stem.
pollination
The moving of the pollen from the one stigma
to another.
Parts of a flower
The parts of the flower that make it possible for
the plant to make another plant
taproot
A root with a few branches that is very
thick and swollen. Carrots are an
example.
fibrous root
A bunch of very fine roots. Grass plants have a this type of
root system.
fruit
The part of a plant that we usually eat that has
the seeds inside.
nutrients
phosphoro
us nitrogen
potassium
Plants need this from the soil to
grow and produce
4 basic needs of plants
co2
sunlightair
watersoil
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