How Has the Median Age of First Marriage in Canada

question 45

Multiple Choice

How has the median age of first marriage in Canada changed from 1970 to 2000?

• A) It has dropped by about 4 years.
• B) It has remained constant.
• C) It has risen by about 5 years.
• D) It has risen by about 8 years.

---

Definitions:

Phytochrome

A blue-green, proteinaceous pigment involved in a wide variety of physiological responses to light; occurs in two interconvertible forms, Pr (red-absorbing phytochrome) and Pfr (far-red-absorbing phytochrome).

Bolting

The production of a tall flower stalk by a plant that grows vegetatively as a rosette (growth habit with a short stem and a circular cluster of leaves).

Gibberellins

A group of plant hormones that regulate growth and influence various developmental processes, including stem elongation, germination, and flowering.

Floral Stalk

The stem or support of a flower, facilitating its connection to the rest of the plant.