Exam 22: Early Development of the Plant Body

Embryo dormancy would typically be caused by:

Metabolism increases toward the end of the maturation phase of seed development.

In some embryos, below the hypocotyl the _________ is found.

An example of coat-imposed dormancy is a mechanically rigid seed coat.

The dormancy acquired during seed maturation is called primary dormancy.

The stem-like axis above the cotyledon(s) is the:

The procambium is the precursor of the:

In temperate regions, after-ripening ensures that seeds will germinate in the fall rather than in the spring.

Normal development of the ______ prevents formation of extra embryos by the ______.

The radial pattern of embryogenesis consists of concentrically arranged tissue systems.

When the seed coat is ruptured during germination, the seed:

During embryogenesis in Arabidopsis, mutants with the twn mutation:

The suspensor is an example of a structure that undergoes programmed cell death.

Which of the following statements about the polarity of an embryo is FALSE?

In epigeous germination, which structure emerges above ground first?

Which of the following CANNOT be part of the plumule?

Seeds with large cotyledons typically have little or no endosperm.

When the zygote first divides, the two daughter cells are the ______ cell and the ______ cell.

In Arabidopsis, embryonic development is thought to be coordinated by at least ______ distinct genes.

What induces the seeds of manzanita and other plants of the California chaparral to germinate?