aquatic animals - frogs

Frogs

Done by :Sumaiah alghamdi

Submitted to: dr. Ghadh al-besher

Content:

• Frogs classification.

• Characteristic.

• Habitat .

• Eating .

• Life cycle

• Movement

• Camouflage

• Poison

• Behavior and communication

• Types

• benefits

Introduction :

• The frogs are some of the few remaining members of the amphibian are group which flourished 250 million years ago .

• (Am-fib-ee-anz )Tow life• The amphibian are adapted to live on land as

well as in fresh water. At certain times of their life history or at particular seasons, however, they show a dependence on, or preference for one or the other.

• about 88% of amphibians are frogs .

Classification

• Kingdom - Animalia

• Phylum - Chordata

• Subphylum - Verebrata

• Class – Amphibia

Characteristic

• The frog is cold-blooded

• Smooth or slimy skin.

• strong, long webbed hind feet that are adapted for leaping and swimming have fingers or toes .

Characteristic

• The eyes have movable lids but ,Its nostrils are situated so that air can be breathed while the frog is swimming at the surface; they can also be closed .

• Behind the eyes are circular ear-drums for hearing.

Characteristic

• They breath dissolved oxygen in water ,when they are young using gill

• They breath air when they are adult

using lungs.

• Have short body no

tail ,are excellent jumpers.

Habitat

• They live on land and water , Live in every climate ,near any fresh water but prefer ponds and lakes .

• can not live in seas or salts water

• They live All over the world ,most species live in the rainforest ,they do not live in Antarctica and some oceanic islands.

Habitat

Eating

• Frogs is carnivores

• frogs have teeth used to grind food ,frogs have sticky tongue use it to catch food

• ,most eat flies and insects

• Some large frogs eat small mammals ,fishs and small frogs –very few eat just plants.

Movement

• They have number of movements to

adaption with environment such as:

• Climbing

• Jumping

• Walking Running

• Swimming

Movement

Life cycle

• includes four basic stages , egg tadpole , a transitional stage , then adult

1-egg most female frogs

lay eggs in early spring

2-tadpole (or polliwog )

3-metamorphosis

4-adult

Captive frogs and toads

com live up to 40 years

Life cycle

Tadpole :born with gill like fish ..they can breath under water ,they had big head large tail tough life but fast swimmers and Favorite food to fish and water beetles .

Life cycle

Camouflage

• Is common in frogs ,most with camouflage ,are nocturnal ,awake at night ,this helps them hide ,some can change colors.

• Temperature and humidity play a part in causing color changes.

Poison

• Many frogs have toxins so other animals will not eat them ,they taste bad.

• Some frogs are very poisonous ,they usually have bright colors ,some frogs get their poison from the animals they eat .

Behavior and communication

• Some are so loud they con be heard a mile away ,many have deep calls or croaks ,they call by passing air through their throat ,the main reason they call is:

1- So males can attract females

2- To guard territory to forecast rain

3- When under stress (if a predator is near)

Behavior and communication

Behavior and communication

Romantic picture Protect her wife from rain .

Benefits

• Frogs aid humans in many ways. They control insect pests in wooded areas, farms, and gardens, and several species have been introduced to various parts of the world as a defense against

undesirable insects.

Types

• You may think that all frogs look the same-ugly and filthy but you will be surprised to know that this amphibian also has numerous varieties. In fact, North America alone consists of over ninety different

species of frogs

Types

Bullfrog

Gray tree frog

Types

Green tree frog

Amazon Milk Frog

Types

Transparencies frog

Moss frog

References:

• http://www.naturehaven.com/Frog/frog.html•Handbook of frogs and toads by albert hazeN

Thanks