Answer:
The correct answer would be c. the sun.
The sun is the ultimate source of energy in any ecosystem.
The solar energy is converted into chemical energy with the help of autotrophs or producers through the process of photosynthesis.
The small portion of this energy is transferred to the next trophic level and by end of 3-4 trophic levels, the entire energy is lost as heat or cellular respiration.
The sun is the ultimate source of energy in most ecosystems. This energy is transformed by producers like plants into a usable form through photosynthesis. Water and plants also have important roles in this process.
In ecosystems, the ultimate source of energy is typically the sun. The energy from the sun is initially harnessed by producers, or autotrophs, such as plants, through the process of photosynthesis. These organisms convert light energy into chemical energy that can be used by other organisms. Water and plants also play crucial roles in ecosystems. Water is necessary for photosynthesis, and plants are vital for converting the sun's energy into a form that other organisms can utilize.
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B. Hormones provide feedback that affects neural processing.
C. Sensory receptors in bones send signals about body position to the brain.
D. The brain sends signals that control the speed at which food moves through the intestines.
Answer:
B
Explanation: The endocrine system secretes hormones into blood and other body fluids. Hormones provide feedback to the brain to affect neural processing. Reproductive hormones affect the development of the nervous system. The hypothalamus controls the pituitary gland and other endocrine glands.
In addition to air and water, our body constantly needs regular inflow of food, which provides the energy reserves necessary for movement, breathing, thermoregulation, heart, blood circulation and brain activity. In the process of digestion of food decays to individual glucose molecules which then fall through the intestinal wall into the bloodstream. With blood flow glucose transported to the liver, where it is filtered and delayed in reserve. The pituitary gland supplies the pancreas and thyroid glands signal to the release of hormones that cause the liver to throw out the accumulated glucose in the bloodstream, and then delivers it to the blood to the organs and muscles that are in need of it. Having achieved the desired body glucose molecules penetrate into the cells, where it is converted into a source of energy that is available for use by cells. Thus, the process of continuous energy supply agencies depends on the level of glucose in the blood.
neural communication
B.
neurotransmitter release
C.
hormone release
D.
nervous system functioning
Ans.
The image below represents neural transduction that involves release of signaling molecules or neurotransmitters by axon terminal of one nerve cell and binding of the released neurotransmitters with the receptors, present on dendrites of another nerve cell. It is method of communication between the neurons. Hence, the image is showing a functional nervous system.
On the other hands, hormones are released by endocrine glands that release their content directly into the blood. The nervous transmission does not include hormone release.
Thus, the correct answer is option C). 'hormone release.'