A good indicator of efficient exercise is a good resting
heart rate. This enables athletes and
health buffs to meet the needs of their body with a slow heart rate. It does not take them much effort in terms of
physical activity whereas those who are out of shape would exert a lot of
effort to complete a task.
Plant cells need Chlorophyll and a Cell wall.
<span><span>Cell Wall: </span>Plant cells are actively involved in water transportation, and thus plant cell wall ensures that the cell does not burst due to over expansion as water flows in (internal turgor pressure). It helps to maintain the shape and osmolarity of the cells and acts as defense against pressure due to inflow of water. Other than that they need cell walls to protect them from pathogens
</span>
<span><u>Chlorophyll:</u></span><u /> <span>The leaves contain a pigment called </span>chlorophyll<span>, which colors the leaves green. </span>Chlorophyll<span> can make food the </span>plant<span> can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.
</span>
- Iqra :)
Answer:
The correct answer is d. circulatory, nervous, urinary, and endocrine systems
Explanation:
Many organ systems together helps in regulating the blood pressure in the body. For example, in the case of stress, the autonomous nervous system helps in raising the heart rate that increases blood pressure in arteries and veins.
Circulatory system contains blood vessels, blood and heart and heartbeat and blood vessel thickness changes with the change in some endocrine hormone levels like cortisol, adrenalin which regulates the blood pressure.
The urinary system helps in the regulation of blood pressure by filtering water from blood. Therefore circulatory, nervous, urinary, and endocrine systems work together and regulate blood pressure.
