FROG DISSECTION PRE LAB

During the frog dissection lab, some students found these small round structures inside their frog (pictured). What do these structures tell us about this particular frog?

• These are eggs. This frog is a female.

• These are eggs. This frog is a male.

• These are bugs. This frog ate just before it died.

• These are bugs. This frog is being eaten by scavengers.

Tags

NGSS.MS-LS1-4

Frogs have a special, translucent eyelid membrane (like goggles) that covers the eye and protects it while the frog is under water. What is this membrane called?

• Tympanic Membrane

• Nictitating Membrane

• Goggle Membrane

• Optic Membrane

Identify the internal frog organ that is shown (in color) in this picture. It has 3 chambers and is a muscle responsible for pumping blood.

• Lung

• Liver

• Heart

• Stomach

Identify the internal frog organ that is shown (in color) in this picture. It is the largest internal organ in both humans and the frog.

• Lung

• Liver

• Heart

• Stomach

Just behind the eye, a specialized membrane, adapted for life in and out of water, serves as the frog's ear. What is this membrane called?

• Nictitating Membrane

• Tympanic Membrane

• Skin Membrane

• Ocular Membrane

What is a special feature of a frog's skin, that allows it to live in water?

• The skin is thin and smooth and can allow oxygen from the water to enter the frogs blood.

• The skin is thin and smooth and protects it from predetors with sharp teeth.

• The skin is thick and rough and acts as an armor against all predators that might eat it.

• The skin thick and rough and provides friction while the frog is swimming to help it balance.

Which of the following frog adaptations help the frog equalize water pressure while it is swimming?

• Eustachian Tubes

• Vocal Tubes

• Tympanic Tubes

• Nictitating Tubes

What are the yellow, spaghetti shaped structures that were located on both sides of the frog?

• Fat Bodies

• Large Intestines

• Lung Pockets

• Liver Muscles

Which of the following organs were located on the bottom layer (the back) of the frog and are used to filter waste from the frog's blood?

• Kidneys

• Pancreas

• Stomach

• Bladder

Identify the lungs