Structural Organisation In Animals Chapter-Wise Test 1

Correct answer Carries: 4.

Wrong Answer Carries: -1.

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

Frogs have a four-chambered heart.
Frogs have a single atrium and two ventricles.
The frog’s heart pumps mixed blood to the body.
Frogs lack a lymphatic system.
3

The ventricle of the frog’s heart pumps mixed oxygenated and deoxygenated blood to the body.

What is the main function of the fat bodies in frogs?

Store bile
Aid in locomotion
Store energy for hibernation
Secrete digestive enzymes
3

Fat bodies in frogs store energy, which is used during hibernation and reproduction.

Which of the following is NOT a function of the frog’s kidney?

Excretion
Oxygen transport
Osmoregulation
Filtering blood
2

The kidney in frogs is responsible for excretion, osmoregulation, and blood filtration but not oxygen transport.

Which type of epithelial tissue lines the frog’s blood vessels?

Cuboidal epithelium
Ciliated epithelium
Squamous epithelium
Columnar epithelium
3

Squamous epithelium, which is thin and flat, lines the blood vessels in frogs to facilitate diffusion.

Which structure in frogs functions as a common passage for the digestive, excretory, and reproductive systems?

Rectum
Cloaca
Ureter
Intestine
2

The cloaca serves as a common passage for digestive, excretory, and reproductive waste in frogs.

Which of the following statements about frog skin is correct?

Frog skin is dry and covered with scales.
Frog skin is moist and plays a role in respiration.
Frog skin is impermeable to water.
Frog skin has no glands.
2

Frog skin is moist and glandular, allowing respiration through cutaneous gas exchange.

Which of the following statements about frog respiration is correct?

Frogs breathe only through their lungs.
Cutaneous respiration occurs only in adult frogs.
Frogs can respire through their skin, lungs, and buccal cavity.
Frogs retain gills throughout their life.
3

Frogs respire through their lungs on land, through their skin in water, and via buccal respiration.

How do frogs regulate their body temperature?

Through metabolic heat production
Through external heat sources
By producing sweat
By using fat reserves
2

Frogs are cold-blooded (poikilothermic) animals that regulate their body temperature by using external heat sources.

Which of the following statements about frog digestion is incorrect?

The liver secretes bile to aid in digestion.
Frogs lack a pancreas.
Digestion starts in the stomach.
The small intestine absorbs nutrients.
2

Frogs have a pancreas that secretes digestive enzymes for breaking down food.

What is the role of the fat bodies in frogs during reproduction?

Produce hormones
Provide energy for gamete production
Aid in digestion
Facilitate fertilization
2

Fat bodies store energy, which is utilized during reproduction for gamete production and development.

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