How Could You Determine If A Plant Is Heterosporous

Question: Which of these characteristics is shared by algae and seed plants?

Answer: chloroplasts

Question: The closest algal relatives of land plants are _____.

Answer: charophytes

Question: Which of the following traits was most important in enabling the first plants to move onto land?

Answer: the development of sporopollenin to prevent the desiccation of zygotes

Question: Seedless plants include _____

Answer: bryophytes, lycophytes, ferns, whisk ferns, and horsetails

Question: The diploid generation of the plant life cycle always _____.

Answer: produces spores

Question: According to the fossil record, plants colonized terrestrial habitats _____.

Answer: in conjunction with fungi that helped provide them with nutrients from the soil

Question: The most direct ancestors of land plants were probably _____.

Answer: green algae

Question: What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Answer: waxy cuticle to decrease evaporation from leaves

Question: Why have biologists hypothesized that the first land plants had a low, sprawling growth habit?

Answer: The ancestors of land plants, green algae, lack the structural support to stand erect in air.

Question: Spores and seeds have basically the same function-dispersal-but are vastly different because _____

Answer: spores are unicellular; seeds are not