During the lifecycle of the plant we can encounter both haploid and diploid forms.
Haploid form of the plant is called a gametophyte. This form was created from spore and enables creation of haploid gametes in the next stage.
Answer:
2) -b
3)-c
4)-c
Explanation:
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Alveoli walls are composed of Type 1 and Type 2 alveolar cells
The answer is iguana because they are the only animal that changes color
The organ that living things such as fish use to extract dissolved oxygen from water are the gills. As land animals and humans don't have gills, we can't breath underwater and take in the oxygen from that source.