Consider the following statements about the human heart: 1. The pericardium is a protective sac around the heart. 2. The endocardium lines the heart chambers. 3. The myocardium is the outermost layer. Which of the above is/are correct? MCQ with Answer and Explanation
Consider the following statements about the human heart:
1. The pericardium is a protective sac around the heart.
2. The endocardium lines the heart chambers.
3. The myocardium is the outermost layer.
Which of the above is/are correct?
A. 1, 2, and 3
B. 1 and 3 only
C. 2 and 3 only
D. 1 and 2 only
Answer: Option D
Solution (By JKExamLibrary)
Pericardium is outer sac, endocardium inner lining. Myocardium is the middle muscular layer; the outermost is epicardium (visceral pericardium). So 3 is incorrect.
Explanation:
Sucrose (table sugar) is a disaccharide composed of glucose and fructose. Glucose and fructose are monosaccharides, glycogen is a polysaccharide. Other disaccharides include maltose and lactose.
Consider the following statements about ecosystem:
1. Producers are autotrophs.
2. Consumers are heterotrophs.
3. Decomposers recycle nutrients.
Which of the above is/are correct?
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