Jade Is Trying to Get Two Pieces of a Puzzle

question 2

Multiple Choice

Jade is trying to get two pieces of a puzzle to fit together.She works on it for several minutes,and when she succeeds,she quickly looks up at her mother and says "Look,Mommy." Based on this information,approximately how old is Jade?

• A) 18 months
• B) 2 years
• C) 3 years
• D) 5 years

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Definitions:

Teratogens

Agents that can cause malformations or defects in an embryo or fetus when a mother is exposed during pregnancy.

Blastocyst

A stage of early embryonic development characterized by a hollow, fluid-filled structure of cells, occurring before implantation in the uterine wall.

Placenta

A structure that forms within the uterus during pregnancy, which supplies the fetus with oxygen and nutrients, while also eliminating waste materials from the fetus's bloodstream.

Endoderm

The endoderm is one of the three primary germ layers in the very early embryo, which gives rise to the gastrointestinal tract, the liver, and the pancreas among other internal organs.