Exam 45: Plant Reproduction and Development

Which of the following has a gametophyte that is an independent plant that dominates the life cycle and does NOT have a sporophyte that is an independent plant?

When we consume whole grains, we are eating endosperm.

Which of the following is TRUE for female reproductive structures in angiosperms?

In north-central Florida, the cars, homes, streets, and ponds are covered with an impressive coating of bright yellow dust every spring. Upon closer, microscopic examination, the yellow ʺdustʺ turns out to be pollen grains. This area of Florida has pine trees, showy daytime-flowering plants, and often-unnoticed nighttime-flowering plants, with sweet-scented flowers, releasing pollen at the same time of year. Based on this information, which group of plants do you think is responsible for the yellow pollen? Why?

Both monocots and dicots protect their young shoots as they emerge from the soil. Describe how each group accomplishes this.

A plant, such as an iris, that reproduces asexually most of the time probably

In the life cycle of a fern, the large fern plant that we normally see is the

In the ovule, which two cells (with a total of three nuclei) are fertilized?

Why is fertilization in flowering plants called double fertilization?

What is the evolutionary significance of a flower that has large, brightly colored petals?

All of the following are processes that occur during angiosperm reproduction EXCEPT

__________are modified leaves that are often brightly colored and scented to attract pollinators.

Grass flowers lack petals and sepals. Which of the following statements is TRUE?

Asexual reproduction is rare in plants.

Which of the following is ʺmaleʺ in the life cycle of angiosperms?

Conifers do not have flowers to attract pollinators. Instead, fertilization occurs

In the alternation of generations, what is formed when a spore germinates?

The immature angiosperm pollen grain consists of a tube cell and a generative cell that will divide to produce__________ sperm cells.

Based on the leaflike sepals in the flower shown in the figure and on the other visible characteristics, this flower is a(n)

In flowering plants, the sperm does not have to swim to the egg. The sperm reaches the eggs by