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  4. Structural Organisation in Animals Chapter-Wise Test 3

Structural Organisation in Animals Chapter-Wise Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about frog morphology is correct?

Frogs have a neck that allows head movement.
Frogs have an elongated tail for balance.
Frogs have a body divided into head and trunk without a distinct neck.
The ventral side of a frog's body is dark-colored for camouflage.
3

Frogs have a body divided into a head and trunk, with no distinct neck or tail.

Which of the following statements about the frog’s nervous system is correct?

Frogs lack a well-developed brain.
The spinal cord does not extend beyond the head.
Frogs have 10 pairs of cranial nerves.
The cerebrum is responsible for involuntary actions.
3

Frogs have 10 pairs of cranial nerves, which help in controlling sensory and motor functions.

Which of the following statements about frog respiration is incorrect?

Frogs use lungs for respiration on land.
Frogs rely on gills for respiration throughout their life.
Frogs use cutaneous respiration in water.
Buccal respiration also plays a role in gas exchange.
2

Frogs use gills only during their larval (tadpole) stage, but as adults, they rely on lungs and skin for respiration.

Which of the following is NOT a function of the frog's liver?

Secretion of bile
Detoxification of blood
Production of red blood cells
Storage of glycogen
3

The liver in frogs performs bile secretion, detoxification, and glycogen storage but does not produce red blood cells.

During which stage of development does a frog undergo metamorphosis?

Egg
Tadpole
Adult
Hibernation
2

Metamorphosis in frogs occurs during the tadpole stage, where they develop limbs and lungs to transition into adult frogs.

Which of the following structures helps in respiration in both water and on land?

Skin
Nostrils
Liver
Pancreas
1

Frogs use cutaneous respiration through their skin to exchange gases in both aquatic and terrestrial environments.

Which part of the frog's nervous system regulates involuntary actions like heartbeat and respiration?

Cerebrum
Medulla oblongata
Cerebellum
Spinal cord
2

The medulla oblongata in frogs regulates involuntary actions such as heartbeat and respiration.

Which organ in a frog stores bile before releasing it into the intestine?

Liver
Gall bladder
Pancreas
Spleen
2

The gall bladder stores bile secreted by the liver and releases it into the duodenum for digestion.

Which of the following statements about frog digestion is correct?

The stomach directly opens into the cloaca.
The liver secretes bile to aid in digestion.
Frogs lack a pancreas.
Frog digestion occurs entirely in the stomach.
2

The liver secretes bile, which is stored in the gall bladder and helps in fat digestion.

What is the function of the hepatic portal system in frogs?

Carry oxygenated blood from the heart to the liver
Carry deoxygenated blood from the liver to the lungs
Transport blood from the intestine to the liver
Carry nutrients from the kidneys to the stomach
3

The hepatic portal system transports blood rich in nutrients from the intestine to the liver for metabolism.

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