Question

In angiosperms, flowers are adaptations for reproduction. Which of the following does NOT usually describe flowers that are pollinated by animals?

A. They are tiny.

B. They are brightly colored.

C. They produce nectar to attract pollinators.

D. They pollinate more efficiently than wind-pollinated plants.

Answer 1

There is a very good chance that the vast majority of the plants you can see out your window are angiosperms. They have taken over the land since their rise during the Age of Dinosaurs, pushing the other groups to the ecological fringes. Gymnosperms still have an advantage in systems that are too cold and/or dry (they become more common with higher altitude and higher latitude), or have nutrient-poor soils, and so haven't been completely pushed out of business.
Reproduction in angiosperms follows a course similar to that in conifers, with the gametophytes confined to a periodically-made part on the main sporophyte. These gametophytes are parts of the characteristic feature of the group: flowers. Although some species have separate male and female flowers, most have both male and female gametophytes in each flower. Many angiosperm flowers don't look like what you might expect of a flower - this is discussed below in the section on coevolution.

Angiosperms get their name from the fact that the seeds (which are sporophytes embryos packaged with some fuel to sprout with) are produced inside a fruit, a structure used to move seeds away from the parent plant. All angiosperms produce fruit, although some might not be things you would see as fruit: fruits can be built to fly through the air (maple trees and dandelions make this type), float across the water (coconuts), stick to passers-by (burrs), as well as be eaten by animals. Even edible fruit is almost never meant to act as a food source for the seeds inside.

Angiosperms are vascular plants, containing xylem (going up) and phloem (bringing down) in various bundled patterns. They have true roots, for holding the plants firm as well as for taking in water and nutrients; they have true stems, for support and for moving materials up and down; they have leaves, usually flat, for most of their photosynthesis. Leaves, and sometimes stems, have pores called stomates that can be opened or closed. When open, carbon dioxide for photosynthesis enters air spaces inside the leaf through which it gets to photosynthetic cells, but water is also lost (this is the main source of transpiration from angiosperms). By controlling the pores, a plant can get enough carbon dioxide for its needs and minimize its water losses. Clusters of xylem and phloem, plus a reinforcing sheath to help support the leaf, are called veins.

Angiosperm stems may be green (herbaceous), which are capable of photosynthesis or woody. Green stems have support limits; woody stems, with ring after ring of tightly-packed cells with very rigid cell walls, are present in the large angiosperms, the trees. Gymnosperms also produce trees with ringed stems.

Answer 2

Okay. Thank you for the help. If you read the question it's saying which out of those answer does NOT usually describe flowers that are pollinated by animals. After thinking I chose "they are tiny" I dont think that's a way to describe flowers pollinated by animals. Because they could be big or tiny. Do you agree?

Answer 3

yes

Answer 4

A is the right Awnser

Answer 5

@WhiteSkys

Answer 6

thank you! I have a few more I'm debating on. Could you help on those as well? @WhiteSkys

Answer 7

sure