Answer:
Gametophytes
Explanation:
Ferns sare known or described as group of plants which are referred to as the vascular plants. Vascular plants are the plants that possess both xylem and phloem. Xylem is used by the plants to transport water while the phloem is responsible for the transportation of food.
The fern is known to be reproducing through the production of spores. The spores produced later on develop to gametophyte.
The gametophyte is known to be the sexual phase of the life cycle of plants and algae inclusive. It is known to occur in the stage of mitosis for the production or making of haploid gametes.
Ferns spp are considered to be beneficial, especially to man. For example, lady fan can be used to stop blood vomiting, likewise , the Hay-scented and sensitive ferns which are used for lung hemorrhage and blood disorder respectively.
Answer:
B.) Take samples from the same location each time.
Explanation:
The original answer choices to this question are the following:
- Provide details about the creatures in the "other" category.
- Take samples from the same location each time.
- Collect samples from nearby lakes for comparison.
- Use a more sophisticated net to collect smaller creatures.
Phoebe should take samples from the same location, rather than four different locations. This will overall give her more accurate and reliable results. Some areas of the lake will have more or less wildlife depending on what predators and prey live. She must have a control variable in this survey, otherwise her data will not be correct.
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Answer:
Option B.
Will continue at the same speed
Explanation:
Reason:
No other forces touches the spaceship
<u>-TheUnknownScientist</u><u> 72</u>
Answer:
A gene pool consists of all genes, including all the different alleles that are present in a population.
Explanation:
In rheumatoid Arthritis patients, NK cell levels were abnormally elevated, possibly due to high serum levels of IL-2.
Rheumatoid arthritis (RA), is an autoimmune disease that means our own immune system attacks self healthy cells in the body by mistake, causing inflammation (painful swelling),mainly attacks the joints.
The given study is to investigate the relationship between serum interleukin-2 (IL-2) levels and disease activity.
This study also showed the relationship between absolute numbers of peripheral lymphocyte subsets, autoantibodies, and associated cytokines in patients with rheumatoid arthritis (RA).
The results showed that the number and percentage of NK cells were positively correlated with serum IL-2 levels so, IL-2 can be a reason for elevated level of NK cells
Learn more about Rheumatoid arthritis on
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