In a population of snails, it is determined that snails with very light colored shells blend in well with the sand of their habitat, and snails with dark colored shells blend in well with the rocks in their environment. Over time, which of the following graphs best represent the type of natural selection taking place in this snail population?

Answers

Answer 1

Answer: C., or disruptive selection. This occurs when the extremes of a trait are selected for, leading to more organisms with those phenotypes in the population.

Answer 2

Answer:

Final answer:

Disruptive selection is taking place in the snail population based on their shell color. Snails with light colored shells blend in with sand while snails with dark colored shells blend in with rocks. This leads to a split in the population with extreme phenotypes being favored.

Explanation:

The type of natural selection taking place in this snail population is disruptive selection. Disruptive selection occurs when extreme phenotypes are favored over intermediate phenotypes, leading to a split in the population. In this case, snails with light colored shells are favored in the sandy habitat, while snails with dark colored shells are favored in the rocky habitat. This results in a bimodal distribution of shell color.

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Pablo is using micropropagation to grow a variety of plants. What difficulty may Pablo face in his work? The cell wall of some cells may not be easy to remove. He will need a large number of seedlings just to produce a few plants. He will need access to a large outdoor space for growing plants. Some of the tissues he cultures may need a complicated culturing medium.

Answers

Answer:

this is you answer

Explanation:

Micropropagation is the artificial process of producing plants vegetatively through tissue culture or cell culture techniques. In this artificial process of propagation, plants are produced invitro by asexual means of reproduction or by vegetative propagation.

Plants can be produced both asexually i.e, via vegetative parts’ multiplication or sexually i.e., seed production. One of the means of asexual reproduction is by multiplying genetic replicas of plants that are referred to as clonal propagation wherein plants can be populated from a single individual through asexual means of reproduction.

A student is drawing a model of the carbon cycle. Which caption should he include to explain how herbivores contribute to the carbon cycle from the food they eat?

Answers

Answer:

Cellular respiration

Explanation:

Herbivores are organisms that feed on plant materials solely. They are usually animals like sheep, cattle, goats with four stomach compartments. They are part of the global carbon cycle which shows how carbon is circulated in nature.

Plant matter is broken down by herbivores through a series of metabolic steps.
The final product is a glucose laden material which is the raw material needed for cellular respiration.
When oxygen combines with the glucose, energy is liberated, and carbon dioxide, a waste product is released into the atmosphere.
This way, carbon is cycled in the ecosystem.

Answer:

Herbivores eat plants, producing carbon dioxide during cellular respiration that is released into the atmosphere.

Explanation:

An orange roughy fish is a fourth-level consumer that requires almost ten times the amount of food available from the primary producers in the ecosystem. Why isn't more energy available from the primary producers?A. Primary producers are not very efficient and lose most of their energy to the environment.
B. There is too much competition from other fourth-level consumers, leaving very little available to the orange roughy.
C. Only a fraction of energy is passed through each level, so there is less available to upper-level consumers.
D. The energy flow is unbalanced and tends to move toward the lower levels.

Answers

The correct answer is option C

The fraction of energy that is available to the fourth level of the ecosystem is very less because the fraction of energy is passed on through each level.

According to the law, only 90% of the energy is transferred through each tropic level and rest of the energy is lost in the form of heat.

Thus, only a fraction of energy reaches the upper tropic level starting from the producers.

C is the correct answer. Remember the 10% rule that only 10% of the energy is passed from one trophic level to the next. Hope this helps!

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Answers

STORED
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Answers

Varieties a number or collection or any of various groups of animals ranking below a species

Breeds a group of animals for reproduction by means of sexual process

Answer:

The correct answers would be varieties, races, and breeds.

In binomial nomenclature, variety refers to the taxonomic rank present below the species and subspecies. It is mainly used in the nomenclature of plants.

In a taxonomic hierarchy, race refers to the informal rank below subspecies. The race includes a genetically distinct group of organisms within the same species.

Breeds refer to the different varieties of same species. These organisms similar to appearance, behavior, and other characteristics. It is mainly used for domesticated animals. For example, Rottweiler and German Shepherd are two different breeds of dog.

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Answers

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