*Question*
Q: In what subgroup are oligochaetes classified? Choices: - mammals - insects - reptiles - polychaetes A:
**Answer**
polychaetes

*Question*
Q: What is the name of the relatively large gland in the neck that secretes thyroxin? Choices: - Pancreas - Thyroid - Pituitary - thyroid A:
**Answer**
thyroid

*Question*
Q: Which temperature scale is commonly used in science? Choices: - ph scale - celsius - centigrade - kelvin scale A:
**Answer**
kelvin scale

*Question*
Q: In a ketone, two of which kind of groups are attached to the carbonyl carbon atom? Choices: - ions - nitrogen groups - oxygen groups - carbon groups A:
**Answer**
carbon groups