input with options: Q: What begins approximately six weeks after fertilization in an embryo? A:
OPTIONS:
- calcification
- elongation
- incubation
- ossification
output: ossification

Q: Q: What is a form of matter that has a definite volume, but an indefinite shape? A:

OPTIONS:
- a solid
- a plasma
- a gas
- a liquid

A: a liquid

input: OPTIONS:
- spirogyra
- invertebrates
- xerophyte
- cephalochordata Now, answer this question: Q: Living species of chordates are classified into three major subphyla: vertebrata, urochordata, and what? A:
A:
output: cephalochordata

Q: What provides the shape of a cell? A:

OPTIONS:
- nucleus
- cytoplasm
- cellulose
- cytoskeleton

Answer: cytoskeleton

Problem: OPTIONS:
- Lactose
- pesticides
- cancers
- vaccines
Q: Q: Many viral diseases can be prevented by giving people what? A:
Answer: vaccines

Q: During the embryonic stage of vertebrates, the notochord develops into what? A:

OPTIONS:
- rib cage
- umbilical cord
- brain stem
- backbone

Answer:
backbone