Science Chapt A2- Study Guide

45 terms by Beaumiester

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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

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