Disadvantage of having more stomata is more CO2 taken up and more water released.
The more the number of stomata per unit area (stomata density) the more CO2 can be taken up, and the more water can be released. Thus, higher stomata density can strongly amplify the potential for behavioral control over water loss rate and CO2 uptake.
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Answer:
b. occurs at the population level via natural selection
Explanation: Genetic adaptation can be described as the change or adjustment in structure or habits by which a species becomes better able to function in its environment, occurring through the course of evolution by means of natural selection.
An example of genetic adaptation at a population level is the encouragement of bipedalism in humans.
The degree of adaptation that can occur in a population is limited by the amount and kind of genetic variation in a population. If a population is suited to adapt and survie in its habitat it will undergo very little genetic adaptaction (prime example is the cockroach). If a population on the other hand is not able to adapt to its habitats´circumstances the popuation will undergo genetic variation in order to survive and ensure the continuation of the species. ( prime example are the birds Darwin studied in the Galapagos Islands)
Animals show anatomical adaptations—e.g., the body of the fish is suited to life in the water; the body of the bird is adapted for flight; and the land mammals show a wide variation in the structure of limbs and body that enables some to run swiftly, some to climb, some to swing from tree to tree, some to glide through the air, and others to jump.
Answer:
To prove the food stored in leaves is starch "we will use a iodine indicator, if the leaf turn blue-black then it is confirmed that the leaf has starch. "
Explanation:
To prove the stored food in leaves is starch, first we will take a leaf, then we will treat the leaf in hot water followed by alcohol. The leaf will die when comes in contact with hot water and the alcohol will help us in the break down of the chlorophyll. Which will fade the green color. Now, we will put iodine, which we use as an indicator in the leaf, when it turn blue-black, it is confirmed that starch is present in the leaf. Sometimes the leaf will turn reddish brown, which depicts the absence of starch.
The solutes move down<span> their concentration gradient and do not require the expenditure of cellular energy.</span>