Animal Kingdom Overview - Numerical Applications
Q. How many bones are in the adult human skeleton?
-
A.
206
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B.
210
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C.
215
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D.
220
Solution
The adult human skeleton consists of 206 bones.
Correct Answer: A — 206
Q. How many chambers does a typical mammalian heart have?
Solution
A typical mammalian heart has 4 chambers: two atria and two ventricles.
Correct Answer: C — 4
Q. How many pairs of chromosomes do humans have?
Solution
Humans have 23 pairs of chromosomes, totaling 46.
Correct Answer: B — 23
Q. How many species of mammals are currently recognized?
-
A.
4000
-
B.
5000
-
C.
6000
-
D.
7000
Solution
There are approximately 5500 recognized species of mammals.
Correct Answer: B — 5000
Q. How many vertebrate classes are there?
Solution
There are 5 main classes of vertebrates: mammals, birds, reptiles, amphibians, and fish.
Correct Answer: B — 5
Q. What is the average lifespan of a red blood cell in humans?
-
A.
30 days
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B.
60 days
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C.
90 days
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D.
120 days
Solution
The average lifespan of a red blood cell in humans is about 120 days.
Correct Answer: D — 120 days
Q. What is the average number of teeth in an adult human mouth?
Solution
An adult human typically has 32 teeth, including wisdom teeth.
Correct Answer: C — 32
Q. What is the total number of recognized animal phyla?
Solution
As of now, there are approximately 30 recognized animal phyla.
Correct Answer: B — 30
Q. What is the typical number of eggs produced by a female frog in a single spawning?
-
A.
100
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B.
1000
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C.
5000
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D.
20000
Solution
A female frog can produce around 5000 eggs in a single spawning.
Correct Answer: C — 5000
Q. What percentage of animal species are invertebrates?
-
A.
50%
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B.
70%
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C.
90%
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D.
95%
Solution
Approximately 90% of all animal species are invertebrates.
Correct Answer: C — 90%
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