Table of Contents
- 1 Which of the following plants are found in moist environments because they have sperm that need to swim?
- 2 Why do seedless vascular plants thrive in damp or moist area?
- 3 Which plant is considered the most advanced seedless vascular plant and why?
- 4 How do gymnosperms reproduce?
- 5 What 2 structures are missing in a nonvascular plant?
- 6 Why do plants without vascular tissue need to live close to water?
- 7 What are two examples of vascular seedless plants?
- 8 What are the 2 types of seedless plants?
Which of the following plants are found in moist environments because they have sperm that need to swim?
Bryophytes also need a moist environment to reproduce. Their flagellated sperm must swim through water to reach the egg.
Why do seedless vascular plants thrive in damp or moist area?
Seedless vascular plants reproduce through unicellular, haploid spores instead of seeds; the lightweight spores allow for easy dispersion in the wind. Seedless vascular plants require water for sperm motility during reproduction and, thus, are often found in moist environments.
Which plant is considered the most advanced seedless vascular plant and why?
Ferns and Whisk Ferns. Ferns are considered the most advanced seedless vascular plants and display characteristics commonly observed in seed plants. Ferns form large leaves and branching roots. In contrast, whisk ferns, the psilophytes, lack both roots and leaves, which were probably lost by evolutionary reduction.
What are the seedless vascular plants?
The seedless vascular plants include club mosses, which are the most primitive; whisk ferns, which lost leaves and roots by reductive evolution; and horsetails and ferns. Ferns are the most advanced group of seedless vascular plants.
What are seedless plants called?
Seedless vascular plants include, ferns, horsetails, and club mosses. Ancient seedless vascular plants grew very tall. For example, club mosses grew to 40 m tall in ancient forests! Today, ferns, horsetails, and club mosses are usually much smaller.
How do gymnosperms reproduce?
gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule—unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits. The seeds of many gymnosperms (literally “naked seeds”) are borne in cones and are not visible until maturity.
What 2 structures are missing in a nonvascular plant?
Characteristics of Nonvascular Plants They not only lack vascular tissues; they also lack true leaves, seeds, and flowers.
Why do plants without vascular tissue need to live close to water?
Explanation: The plant body that is most obvious in non-vascular plants are the the gametophyte generation. The non-vascular plants grow in moist environments. It is due to lack of vascular tissue that requires to maintain close contact with water to prevent desiccation.
What are the most common seedless vascular plants?
Ferns are the most common seedless vascular plants (Figure below). They usually have large divided leaves called fronds. In most ferns, fronds develop from a curled-up formation called a fiddlehead (Figure below).
What do all seedless vascular plants have in common?
Seedless vascular plants include ferns, horsetails and clubmosses. These types of plants have the same special tissue to move water and food through their stems and foliage, like other vascular plants, but they don’t produce flowers or seeds. Instead of seeds, seedless vascular plants reproduce with spores.
What are two examples of vascular seedless plants?
What are the 2 types of seedless plants?
The two groups of seedless plants are nonvascular plants and seedless vascular plants. Mosses, liverworts, and hornworts do not have vascular tissue to transport water and nutrients.