Biology MCQs with Explanations

Explanation

The expected number of RBCs in a single drop, or microliter, of blood is 4.0 to 5.2 million in women and 4.5 to 6.2 million in men.

Explanation

Spirogyra is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

2 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Humans have 12 pairs of ribs, making a total of 24 ribs. However, only the first 7 pairs are considered “true ribs” because they are directly attached to the sternum via their own costal cartilages. So, the number of true ribs in the human body is: 7 pairs, making a total of 14 true ribs. Therefore, the correct answer is : 14

Explanation

Marine Biology is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Both b and c is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Criculatory system is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Habituation is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Phagocytosis is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Rhizoids bear Rhizome is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.