Plant parts can grow with or against gravity. This type of tropism is called gravitropism. Roots of a plant grow downward and exhibit positive gravitropism. Stems, on the other hand, exhibit negative gravitropism since they grow upwards and against the force of gravity
<h2>Answer:</h2>
Innate immune system is the first immune system in the body. It is usually described as the first line of defense. It is not learned or acquired from the environment.
The two sensory systems of innate immune response are:
- DNA sensing innate response.
- Pattern recognition receptors (PRRs) mediated microbe sensing.
Three effector actions are:
- Y shaped proteins on the epithelial walls.
- All blood cells activation.
- Phagocytosis by macrophages.
Answer:
The pulmonary artery carries deoxygenated blood (blood whose oxygen content is relatively low) from the right ventricle to the lungs. The blood here passes through capillaries to alveoli and becomes oxygenated (as part of the process of respiration).
Answer:
C
Explanation:
As kidneys get rid of waste.
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Answer:
D) most phosphorus in the environment is bound to carbon, nitrogen and hydrogen