Question

1. In ferns, some leaves are “fertile” in that they bear sporangia. What are the structures in gymnosperms that are analogous to a leaf and sporangia? Select all that apply.

cone scales and ovules

seed coat and embryo

cone scale and pollen-producing sporangia

cones and seeds

2.

You are on an expedition in a tropical rainforest. You notice a tall plant with large, long, conical purple flowers that produce nectar. When you ask your guide about the plant, she pulls out a large pink fruit from her bag and explains that it is from the plant with the purple flowers. After tasting the fruit, you decide to bring the plant back home and cultivate it in a greenhouse. You remember seeing a particular butterfly on the purple flowers during your trip to the rainforest. After obtaining a few of these insects, you release them into the greenhouse. A few weeks later, the pink fruit plant is growing! In the process, though, a few butterflies have escaped. Is this an environmentally safe situation?

Yes, the butterflies will aid in the pollination of several flower species, thus benefiting the ecosystem. No, the butterflies could spread the pollen of the purple flowers to native plant species. No, the butterflies may not have a natural predator in this environment; thus, they could displace native species that consume nectar. Yes, the butterflies eat only nectar, so the ecosystem will not be disturbed.

Answer 1

1.Both A and C

Cone scale and ovules.Cone scale and pollen producing sporangia.

Sporangia of ferns are found on the underside of leaf and are joined together into clusters called sori. Sporogenous cells in sporangia undergo meiosis to produce spores.

Gymnosperms also produce spores from receptacles of sporangia found on sporophylls. Sporophylls are scale like structures that together form a cone(scale) .Female cones contain two ovules per scale .pollen grains from cones produce microspores.

2. C.No, the butterflies may not have a natural predator in this environment; thus, they could displace native species that consume nectar.

The nectar produced by flowers attract pollinators which is also consumed by predators.The butterflies in this case will not have predators in this environment so they could displace native species that consume nectar.