Consider statements about human anatomy: 1. The biceps is a muscle in the arm. 2. The quadriceps is a muscle in the thigh. 3. The diaphragm separates the thorax and abdomen. Which are correct? MCQ with Answer and Explanation
Consider statements about human anatomy: 1. The biceps is a muscle in the arm. 2. The quadriceps is a muscle in the thigh. 3. The diaphragm separates the thorax and abdomen. Which are correct?
A. 1 and 3 only
B. 1, 2 and 3
C. 1 and 2 only
D. 2 and 3 only
Answer: Option B
Solution (By JKExamLibrary)
The biceps brachii is a two-headed muscle located in the upper arm, responsible for flexing the elbow. The quadriceps femoris is a large, four-headed muscle group in the front of the thigh, extending the knee. The diaphragm is a dome-shaped skeletal muscle that forms the floor of the thoracic cavity and the roof of the abdominal cavity, crucial for breathing. All statements are correct.
Explanation:
DNA is primarily located in the nucleus of eukaryotic cells. It contains deoxyribose (not ribose), is double-stranded, and adenine pairs with thymine. Thus, D is correct.
Explanation:
Histoplasmosis is a respiratory fungal infection caused by inhaling spores of Histoplasma capsulatum, often found in bird or bat droppings. It can be severe in immunocompromised.
In plant physiology, the 'Guttation' is the process by which water is exuded from the plant in liquid form. This typically occurs from specialized structures at the leaf margins called:
Explanation:
Guttation is the exudation of water in liquid form from the intact, uninjured surfaces of plants, typically from the margins or tips of leaves. This occurs when root pressure is high (usually at night or early morning when transpiration is low and soil moisture is high) and the rate of water absorption exceeds the rate of transpiration. The water is forced out through specialized structures called hydathodes (or water stomata), which are located at the leaf margins and lack the mechanism to close like regular stomata.
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