Answer: c. nephron
Explanation: The nephron is the functional unit of the kidney, which actively filters blood and generates urine. The nephron is made of the renal corpuscle and renal tubule. Cortical nephrons are located within the renal cortex, whilst juxtamedullary nephrons are observed inside the renal cortex near the renal medulla.
The size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.
<h3>What do you mean by Adaptation?</h3>
Adaptation may be defined as the process of modifying one's characteristics to better suit a situation and survive more efficiently.
The size of the tube that produces nectar is just 27.9cm long, while the length of the proboscis of a moth is 30.5cm. It easily consumes the nectar and gets energy for survival as well as reproduction.
Therefore, the size of the proboscis helps the moth to consume the food (nectar) easily from Darwin's orchid.
To learn more about Adaptation, refer to the link:
brainly.com/question/1213023
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Plants have all of the same organelles as animal cells along with chloroplasts because plants make their own source of food with energy from the sun.