Daily Olympiad: Biology - Structural Organisation [20260511] – 7 Practice Problems & Printable PDF

1. Which of the following structural features is NOT characteristic of cardiac muscle tissue?

A. A) Presence of intercalated discs B. B) Multiplication of nuclei per fiber C. C) Branched cellular arrangement D. D) Striated appearance

Solution

Correct: B

Cardiac muscle cells are typically uninucleate, with a single nucleus per cell. Skeletal muscle fibers, on the other hand, are multinucleated due to the fusion of myoblasts during development.

2. The dermis of the skin contains all of the following EXCEPT:

A. A) Dendritic cells B. B) Keratinized stratified squamous epithelium C. C) Meissner's corpuscles D. D) Blood vessels

Solution

Correct: B

Keratinized stratified squamous epithelium is a feature of the epidermis, not the dermis. The dermis contains connective tissue, blood vessels, and sensory receptors like Meissner's corpuscles.

3. Which of the following correctly identifies the location of simple columnar epithelium in the human body?

A. A) Alveoli of lungs B. B) Inner surface of cheeks C. C) Stomach lining D. D) Bile ducts

Solution

Correct: C

Simple columnar epithelium, specialized for absorption and secretion, lines the stomach. Alveoli have simple squamous epithelium, cheeks have stratified squamous, and bile ducts have transitional epithelium.

4. In the human digestive system, the layer responsible for peristaltic movements contains three distinct arrangements of muscle fibers in the stomach. Which layer contains this specialized muscular arrangement?

A. A) Submucosa B. B) Muscularis externa C. C) Mucosa D. D) Serosa

Solution

Correct: B

The stomach's muscularis externa has three layers (longitudinal, circular, and oblique) to enable complex peristaltic movements. The submucosa lacks muscles entirely.

5. Which of the following is the correct structural classification of the blood based on connective tissue terminology?

A. A) Fluid connective tissue with plasma as intercellular matrix B. B) Solid connective tissue with fibers as intercellular matrix C. C) Cartilage with plasma as intercellular matrix D. D) Dense connective tissue with reticular cells

Solution

Correct: A

Blood is a special type of liquid connective tissue. Its matrix is plasma, which suspends red and white blood cells and platelets.

6. Which of the following structures in the human heart opens directly into the right atrium?

A. A) Mitral valve B. B) Tricuspid valve C. C) Pulmonary vein D. D) Coronary sinus

Solution

Correct: D

The coronary sinus returns deoxygenated blood from the heart muscle itself to the right atrium. Mitral valve connects the left atrium to ventricle; pulmonary veins return oxygenated blood to the left atrium.

7. Which of the following statements about the structural organization of the human liver is true?

A. A) Hepatic lobules radiate from a central vein B. B) Bile ducts are formed in the hepatic sinusoids C. C) The portal triad lies in the center of a lobule D. D) Kupffer cells are phagocytic hepatocytes

Solution

Correct: A

Liver lobules are organized around a central vein with hepatocytes radiating outward. Bile ducts form at the edges near the portal triad, and Kupffer cells line the sinusoids.

Daily Olympiad: Biology - Structural Organisation [20260511]

1. Which of the following structural features is NOT characteristic of cardiac muscle tissue?

2. The dermis of the skin contains all of the following EXCEPT:

3. Which of the following correctly identifies the location of simple columnar epithelium in the human body?

4. In the human digestive system, the layer responsible for peristaltic movements contains three distinct arrangements of muscle fibers in the stomach. Which layer contains this specialized muscular arrangement?

5. Which of the following is the correct structural classification of the blood based on connective tissue terminology?

6. Which of the following structures in the human heart opens directly into the right atrium?

7. Which of the following statements about the structural organization of the human liver is true?

Related Practice Tests

Daily Olympiad: Biology - Structural Organisation [20260511]

Daily Olympiad: Biology - Cell Structure Function [20260511]

Daily Olympiad: Biology - Ecology Environment [20260511]

Discussion & Comments