الجمعة، 31 ديسمبر 2010

What Are the Parts of a Flower?

Most plants reproduce with the help of flowers. Help Bud and Sprout name each part of the flower below.
Part is the sticky part of the pistil that pollen sticks to.
Is it the anther, ovule, or stigma?

الخميس، 30 ديسمبر 2010













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parts of flowers

Flower Parts

Flowers are important in making seeds. Flowers can be made up of different parts, but there are some parts that are basic equipment. The main flower parts are the male part called the stamen and the female part called the pistil.

The stamen has two parts: anthers and filaments. The anthers carry the pollen. These are generally yellow in color. Anthers are held up by a thread-like part called a filament.

The pistil has three parts: stigma, style, and ovary. The stigma is the sticky surface at the top of the pistil; it traps and holds the pollen. The style is the tube-like structure that holds up the stigma. The style leads down to the ovary that contains the ovules.

Other parts of the flower that are important are the petals and sepals. Petals attract pollinators and are usually the reason why we buy and enjoy flowers. The sepals are the green petal-like parts at the base of the flower. Sepals help protect the developing bud.
Flowers can have either all male parts, all female parts, or a combination. Flowers with all male or all female parts are called imperfect (cucumbers, pumpkin and melons). Flowers that have both male and female parts are called perfect (roses, lilies, dandelion).

الاثنين، 27 ديسمبر 2010

|Arm bones


Arm Bones

How much do you know about bones in the human arm? Want to learn more? Check out our human body section on the human skeletal system. 
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How much do you know about the animal kingdom? Can you classify animals? Give it a try. If you have any problems, check out our reference library section on "The Animal Kingdom." 
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The parts of a plant / What plants need to grow
Teacher's Notes
Roots -> Take in water and food (mineral salts) from soil. Anchors plants. The roots of a plant are spread out.
Stem -> "Like a straw", transports water through plant. Raises the height of flowers and leaves. Brings closer to light. Structural. The stem is made up of little tubes.
Leaves -> Different shapes. Almost always green but sometimes covered with another colour such as red. Green substance in leaves -> chlorophyll. Leaves make food for the plant. To do this they need the water and mineral salts obtained from the soil. They are carried inside little veins in the leaf. To make food leaves also need sunshine and CO2.
Flowers - > Flowers produce seeds which form new plants.
Space and warmth also needed for a plant to grow.

The parts of a plant
Roots - Stem - Leaves - Flowers
The _______ of a plant produce seeds which form new plants.
The _____ make the food for the plant. They take the water and mineral salts and use them together with sunlight and carbon-dioxide to make food.
The ____ is like a straw. It moves water around the plant. It raises the leaves and flowers of the plant off the ground.
The ____take in water and mineral salts from the soil. They anchor the plant into the ground.

The Human Skeleton


The Human Skeleton

How much do you know about the bones in your body? Try this activity and find out. Want to learn more? Check out our human body section on the human skeletal system. 
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Muscles of the Human Body


Body Muscles

How much do you know about muscles in the human body? 
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Many of us are born, live, and grow old, without ever really knowing how our body works. Our body is an amazing creation. Knowing about our body, and how it works, can help you maintain a strong and healthy body. Our body consists of many systems working individually, and together, to keep us alive. These systems include the cardiovascular system or circulatory system, digestive system, endocrine system, lymphatic immune system, muscular system, nervous system, reproductive system, respiratory system, sensory system, skeletal system, and urinary system. Check out the following sections to learn more about the human body, and how it works. For more detail, also see our Human Body Video Collection.


Cardiovascular SystemDigestive SystemMuscular SystemNervous System 
  Cardiovascular SystemDigestive System      Muscular SystemNervous System    
     
Skeletal System    
Skeletal System    
     
 
 

Vertebrate animals


Animals with an internal skeleton made of bone are called vertebrates. Vertebrates include fish, amphibians, reptiles, birds, mammals, primates, rodents and marsupials.
Although vertebrates represent only a very small percentage of all animals, their size and mobility often allow them to dominate their environment.
Click on the picture or name of the animals below for more information.
fishfrogs are amphibiansreptilesparrot is a bird
FishAmphibiansReptilesBirds
    
Mammals include feline catsprimates mice are rodents 
MammalsPrimatesRodents 
    
koala bear is a marsupialdolphinsseals 
MarsupialsWhales and
Dolphins
Seals 

Animals kinqdom


There are many different types of animals in the world. Many animals are quite similar to each other. Others are quite different. Animals can be classified based on their similarities. Continue on, and learn more about your fellow Earth inhabitants.
Here are some of the animals you can investigate in our Science Reference Library. The first name you read is the common name for the animal. The name in parentheses ( ) is the Latin word for the group (the phylum or subphylum or class or group or order) that scientists sometimes use to refer to animals.

Invertebrates

Animals
without a Backbone
or Spinal Column:

Vertebrates

Animals
with a Backbone
or Spinal Column:
(All these animals are in thephyla Chordata and the subphyla Vertebrata.)
Protozoa
(phyla: protozoa)
Fish
(group: Pisces)
Echinoderms
such as starfish
(phyla: Echinodermata)
Amphibians
such as frogs
(class: Amphibia)
Annelids
such as earthworms
(phyla: Annelida)
Reptiles
such as crocodiles
(class: Reptilia)
Mollusks
such as octopus
(phyla: Mollusca)
Birds
(class: Aves)
Arthropods
such as crabs, spiders and insects
(phyla: Arthropoda)
Mammals
(class: Mammalia)
Crustaceans
such as crabs
(subphyla: Crustacea)
Marsupialssuch as kangaroos
(order: Marsupialia)
Arachnids
such as spiders
(subphyla: Chelicerata
class: Arachnida)
Primates
such as gorillas and chimpanzees
(order: Primates)
Insects
(subphyla: Uniramia
class: Insecta)
Rodents
such as mice
(order: Rodentia)
 Cetaceans
such as whales and dolphins
( order: Cetacea)
 Animals such as seals
(order: Carnivora
family: Phocidae)
For more information about animals, see our Animal Video Collection.

We

الجمعة، 24 ديسمبر 2010

information about invertebrate animals

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with all my love 
ramoma212

information about invertebrate animals

Of the million or more animal species in the world, more than 98% are invertebrates. Invertebrates don't have an internal skeleton made of bone. Many invertebrates have a fluid-filled, hydrostatic skeleton, like the jelly fish or worm. Others have a hard outer shell, like insects and crustaceans. There are many types of invertebrates. The most common invertebrates include the protozoa, annelids, echinoderms, mollusks and arthropods.Arthropods include insects, crustaceans and arachnids.

Click on the picture or name of the animals below for more information.

Protozoa
Earthworms
clams and mussels
starfish
ProtozoaAnnelidsMollusksEchinoderms
crabsspiderdragonfly
CrustaceansArachnidsInsects
http://www.kidport.com/reflib/science/animals/animalindexinv.htm