Which Specific Group Of Plants Have A Characteristic Long, Thin, Needle-Like Leaves?
Which specific group of plants have a characteristic long, thin, needle-like leaves?
Which specific group of plants has a characteristic of long, thin, needle-like leaves?
Gymnosperms (naked seeds) are four extant divisions of vascular plants with exposed ovules (seeds) on the surface of cone scales. Gymnosperms with cones are among the worlds largest and oldest living species. Around 200 million years ago, they dominated the landscape. Gymnosperms are now very valuable economically as supplies of lumber, pulpwood, turpentine, and resins.
Conifer stems have a woody axis that contains tracheids, which are primitive water- and mineral-conducting cells. Tracheids are linked by tunnels known as bordered pits. The leaves are needle-like or scale-like, and they usually have resin-filled canals. The number of leaves per fascicle is an important distinguishing feature of pine leaves, which are borne in bundles (fascicles). Most gymnosperms are evergreen, but some are deciduous, such as larch and bald cypress (the leaves fall after one growing season). Many gymnosperm leaves have a thick cuticle and stomata beneath the surface.
Which of the following is NOT a characteristic of gymnosperm?
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