The functions of lymphatic system are:
To provide generic defenses against any type of invaders which happen to breach our barriers, remove any debris left after the invasion has been stopped, and then fill in the damaged area with scar tissue.
The main cells of immune response are found in lymph: B and T lymphocytes are produced in lymphoid tissue (T lymphocytes mature in thymus (or tonsils)) and concentrated in the lymph nodes.
To collect excess tissue fluid and make it pathogen free before returning it to the bloodstream.
Lymphatic system drains and cleans interstitial fluid from tissue spaces and also returns leaked plasma proteins to the blood.
It also transports lipids and lipid-soluble vitamins absorbed from the digestive system.
Big lymph vessels -lacteals are at the beginning of the gastrointestinal tract and their role is to transport fats (lipids) and vitamins to the blood circulation via the thoracic duct.
Based on value of change in shoot biomass, the study reveals that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.
<h3>What is ecology?</h3>
Ecology is the study of living organisms and their interactions with one another and their non-living environment.
From the observation of the study conducted:
- A negative value of change in shoot biomass indicates that growth of each plant was reduced as a result of either competition for space or food.
- The late plants were most positively affected as indicated by the highest positive value of change in shoot biomass whereas the early plants were most negatively affected as indicated by the lowest negative value of change in shoot biomass.
Therefore, it can be concluded from the study that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.
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From the given choices above, the portion that is not readily penetrated by the sunlight is the river's or the stream's mouth. The plant life usually are on the surface of the water. The middle portion is occupied by the fish and other aquatic lives.
