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45 terms

Science Chapt A2- Study Guide

STUDY
PLAY
metamorphosis
Major changes in the body form during the life cycle of an animal
direct development
a kind of growth in which an organism gets larger but doesn't go through other changes
life cycle
all the stages a living thing goes through
photosynthesis
process by which plants use the sun's energy to convert water and carbon dioxide into sugars
gene
The basic unit of heredity
heredity
The process by which traits are passed from parents to offspring
trait
a characteristic that makes one organism different from another
The gene sets are transferred from who to whom during reproduction?
From the parents to the offspring
Sperm cell is from the
father
egg cell is from the
mother
Some traits, such as eye color are affected only by______________
genes
Most traits develop through a combination of what?
heredity and nurture
Name characteristics affected by genes
height, eye color, skin color
You can change some characteristics by the way you live. You cant change your eye color, but what you EAT and how you take care of your SELF can influence you height. Eating healthful food and getting proper EXERCISE enable your boy to grow.
*
Most living things get energy to live from
the sun
Plants use sugars for what?
food
The sugars in plants provide the energy the plants need for _______________and good health.
growth
FLowering plants grow from
seeds
A seed grows when an egg is
fertilized
Each seed holds a tiny plant called an
embryo
When the soil is warm and there is enough moisture, the plant will
germinate or begin to grow
When the seed germinates, it swells and cracks open. TIny roots begin to grow down into the________________.
soil
Inside the seed, the embryo is surrounded by ___________.
food
A new plant
seedling
Stage after seedling stage. The plant grows and develops what?
Flowering stage ------ develops flowers!
Flowers produce_______, the male sex cells of the plant.
Pollen
Birds and insects moving from flower to flower bringing pollen to the female eggs inside the flowers
pollination
Ferns and mosses reproduce by
spores
Life cycle of plants from spores, first step
first FERTILIZED develop into small plants
(Life cycle of plants from spores)
Small plants become adult plants, these release
spores
(Life cycle of plants from spores)
The spores are released into the
MOIST environment. They develop into new plants
(Life cycle of plants from spores)
Final stage, tiny plants develop sperm and ___________
EGGS. The sperm are released and swim to the eggs. The cycle starts over.
Plants growing from other parts of parent plants
clones
Plants that grow from a storage stem
tuber (potatoes)
Almost all animals come from fertilized
eggs
Mammels, such as kittens and humans, begin their life inside of their
mother
Marsupials are mammals that don't develop inside the mothers bodies and need to stay in the mothers
pouch
Birds lay eggs, birds hatch, need to be fed and kept warm
*
Reptiles lay eggs, hatch, are now on their own
*
Amphibians and fish lay eggs in water, hatch, look like parents, survive on their own
*
Shedding an out covering
molting
Spiders and reptiles
animals that molt
Stages of the human life cycle
infant
child
adolescent
adult
fertilized egg inside mother
4 stages of metamorphosis
egg
caterpilliar
pupa/cocoon
moth
incomplete metamorphosis
a young grasshopper that does not have wings