The small, heart-shaped gametophyte called a prothallus is part of the life cycle of ferns. So, the correct option is (b).
A fern (Polypodiopsida or Polypodiophyta) is a type of vascular plant that reproduces through spores and lacks both seeds and flowers. Vascular plants have xylem and phloem. Their vascularity, or the presence of specialised tissues that conduct water and nutrients, sets them apart from mosses and other bryophytes.
A fern's prothallus is a flat, green, autotrophic, cordate (heart-shaped), dorsiventral, free-living, autonomous, nonvascular gametophyte that ranges in size from 1/8 to 113 inches (5-l0 mm). Typically, the gametophyte stage of the life cycle is known as the protothallium or prothallus. The spore that germinates becomes the prothallium.
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<span>Anterior cruciate ligament. The athlete may be experiencing a common sports-related injury. Pain and swelling due to forceful twisting or rotating of the knee can result in a torn meniscus. Rest and a cold compress may be of help in reducing the swelling and in difficulty in walking or other motions that shift the weight to the knee.</span>
Answer:
stem cell
Explanation:
it has no specific function because can rise into any typical cell function
Where's the work or picture? I don't have anything to solve for unless you show the graph or chart.
Answer:
In addition to depleting resources for forest-dependent communities, deforestation is contributing to an increase in small-scale natural disasters. “That means when there's heavy rainfall, forest soil can absorb water underground and disburse it to streams
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