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4th Grade Science Unit 2
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What do you call the protective outer layer of a leaf?
Epidermis
What do you call the food-making process of a plant?
Photosynthesis
What is the process of a seed sprouting called?
germination
The green substance in a leaf that traps sunlight is called...
chlorophyll
An undeveloped plant with food stored, and sealed in a protective covering is called a...
seed
The process plants use to get rid of extra water is called...
transpiration
The transfer of a pollen grain to the pistil is called...
fertilization
The process where plants break sugar down and give off energy is called...
respiration
The joining of a female sex cell and a male sex cell into a fertilized egg.
fertilization
in a seedless plant, the cell that can grow into a new plant is called...
A spore
How are plants different from animals?
Plants can make their own food.
How do seeds travel?
They can be carried by wind and water.
Animals and insects can move them.
Some plants explode and scatter their own seeds.
What are cactus plants and evergreen trees designed to do?
Find and store water.
Plants need light and water for make food. What is the third thing they need?
Carbon dioxide
What is the main food-making part of a plant?
leaf
Which part of the seed begins to grow first?
The root
What time of day does photosynthesis take place?
in the daytime when there is plenty of sunlight.
In what order do plants reproduce?
pollination - fertilization - seed develops - plant develops
What are the three main tasks of most roots?
Absorb water from the soil as well as minerals.
Roots hold a plant in place.
Some plants use roots to store food.
Name 2 different kinds of roots.
Taproot
Fibrous roots
Name the 2 different kinds of stems.
Woody stems
Nonwoody stems
In photosynthesis the plant...
Stores energy
In respiration the plant...
Releases energy
More than ____ green plants have flowers.
8 out of ten.
Respiration uses this gas...
oxygen
Plants without seeds may grow from...
spores
Photosynthesis uses this gas...
Carbon Dioxide
Author
bdoering
ID
225109
Card Set
4th Grade Science Unit 2
Description
Study for Unit 2 science test
Updated
2013-06-26T19:06:01Z
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