The loss of stickleback pelvic spines is similar to the loss of which body parts
ID: 148546 • Letter: T
Question
The loss of stickleback pelvic spines is similar to the loss of which body parts in some other four-legged vertebrates?
A. divergent thumbs
B. fins
C. hind limbs
D. gills
The pelvic spines in the stickleback are modified what?
A. legs
B. fins
C. limbs
D. gills
What is a good generic definition of a hypothesis?
A. A combination of politics and scientific research to answer important questions for the general population.
B. An educated guess or expected answer to a scientific question based on prior knowledge and observation.
C. A prediction concerning a natural phenomenon based on personal observations in the natural world.
D. A theory that can easily be proven by conducting a few simple experiments.
Which is a properly written hypothesis?
A. The rose will grow tomorrow with sunlight.
B. If we take a rose outside and leave it, I think the sun will help it grow.
C. Roses will grow larger if given proper sunlight and nutrients.
D. I believe that increased sunlight and nutrients will allow roses to grow larger.
Which hypothesis states that no statistical significance exists between the independent and dependent variable?
A. simple hypothesis
B. null hypothesis
C. complex hypothesis
D. alternative hypothesis
E. statistical hypothesis
Explanation / Answer
1. The loss of stickleback pelvic spines is similar to the loss of Hind limbs in tetrapod vertebrates. Hence the correct answer is C.Hind limbs.
2. The set of pelvic spines in the stickleback is a protective armour of the organism. It is a form of modifies Fins. Hence, the correct answer is B. Fins.
3. A hypothesis is a theory given by a researcher based on his/her knowledge mixed with a guess which can be supported by logic first and then experiment can be conducted to prove it. Hence, the correct generic definition of hypothesis is, B. An educated guess or expected answer to a scientific question based on prior knowledge and observation.
4. Among the four given statements, statement D includes everything a good hypothesis should have: what will happen? And, Why do you think it will happen? Hence the correct option is D.
5. The hypothesis which states that no statistical significance exists between the independent and dependent variable is known as null hypothesis.
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