adult seedless plants called the ______ produces spores in the structure called the_______.
Answers
Answer:
Plants (kingdom Plantae) are autotrophs; they make their own organic nutrients. The term “organic” refers to compounds that contain carbon. Organic nutrients such as sugars are made by photosynthesis.
Plants are adapted to living on land. For example, the above-ground parts of most plants are covered by a waxy layer called a cuticle to prevent water loss. Aquatic plants are secondarily adapted to living in water.
Some evidence that suggests that plants evolved from the green algae is:
they both use chlorophyll a, chlorophyll b, and carotenoid pigments during photosynthesis.
the primary food reserve of both is starch.
they both have cellulose cell walls.
Genetic and morphological evidence indicates that plants evolved from a group of green algae called charophyceans. Many charophyceans inhabit shallow freshwater environments. Natural selection may have favored individuals capable of surviving occasional drying in these environments and this gave rise to land plants.
These traits occur in plants but not charophyceans. Some evolved independently in other algae.
Apical meristems
Alternation of generations
Spores with protective walls
Spores produced in sporangia
Gametes are produced in multicellular structures called gametangia; Antheridia produce sperm; Archegonia produce eggs
Multicellular dependent embryos
Many have a cuticle that waterproofs and offers some protection
Explanation: