Certain plants lend themselves to more than one method of propagation, while other plants are best propagated by one particular method for reliable results. If, for example, you cross a horse with a donkey, the offspring will not be fertile — it’s called a mule. Start studying Bio106 Chapter 30 Seedless Plants. The simple reason is that they can grow taller. Seed Plants: Plants with seeds fall into two main group. Mosses grow on tree trunks, and horsetails (Figure 14.2.1) display their jointed stems and spindly leaves on the forest floor. More than 20,000 species of ferns live in environments ranging from tropics to … gymnosperm: "naked seed" vascular plant that produces seeds that are not protected by fruit but are hidden in a woody cone angiosperm: vascular plants that produce flowers and fruit with one or more seeds. Question: Why are there more seed plants than seedless plants? Several evolutionary innovations explain their success and their ability to spread to all habitats. They are considered the most advanced seedless vascular plants and display characteristics commonly observed in seed plants. One reason why seed plants are so numerous is that they produce seeds. ... Heterosporous seedless plants are seen as the evolutionary forerunners of seed plants. Seedless plants, like these horsetails ... Heterospory is observed in a few seedless vascular plants and in all seed plants. An incredible variety of seedless plants populates the terrestrial landscape. Evolution of Seed Plants. Not ever cross results in fertile offspring. Chapter 17: Evolution of Plant & Fungal Diversity 1 (17.1-17.2) Key Plant Adaptations to Life on Land 2 (17.2) Compare the bryophytes, seedless vascular plants, gymnosperms, and angiosperms More than 260,000 species of tracheophytes represent more than 90 percent of Earth’s vegetation. They are considered the most advanced seedless vascular plants and display characteristics commonly observed in seed plants. A seed has three important parts: an embryo, stored food, and a seed coat. They contain embryos deep within their centers, which are surrounded by a sack of nutrients and minerals enclosed by a tough protective outer shell that protects the growing seed from predation and life-threatening exposure to the elements. The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. Report Abuse. With their large fronds, ferns are the most readily recognizable seedless vascular plants. Seeds and pollen—two critical adaptations to drought, and to reproduction that doesn’t require water—distinguish seed plants from other (seedless) vascular plants. Why do you think vascular plants are more successful and widespread on land than vascular plants Because vascular plants are able to transport resources to different parts of their body easier, this also makes it so they don't have to grow close to the ground Even though different kinds of seeds look different from each other, they all have a similar structure. Even as the seedless vascular plants were having their heyday 300 million years ago, seed plants evolved and started new trends in the plant world. The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication.