BIOLOGY HIGH SCHOOL

Which of the following is an example of mutualism? (1 point)A)Bacteria live in root nodules of a plant, processing nitrogen into ammonia for the plant and receiving protection and a steady food supply in return.(My answer)
B)Moss benefits from exposure to light and moisture as it grows on a tree trunk that is not affected by its presence.
C)Fleas live in the fur of a dog where they periodically pierce the dog’s skin and feed on its blood.
D)Cowbirds lay their eggs in the nests of other birds that are often tricked into rearing the cowbird chicks instead of their biological chicks.

Answers

Answer 1
Answer:

The correct answer is A. Bacteria live in root nodules of a plant, process nitrogen to ammonia for the plant, receive protection and steady food supply which is being got in return.

Mutualism is referred to as the way two organisms which are of different species exist in relationship whereby every individual benefits from activity of each other.

The relationship which is between bacteria and ungulates with the intestine is or good example of mutualism.

Mutualism plays an important role in ecology. We can say that if we measure the exact fitness what we get as a benefit is a mutualistic relationship.

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Nucleic acids are composed of:a: a phosphate group, a pentose sugar, a nitrogen base b: a phosphate group, a pentose sugar, a carboxylic acid c: a pentose sugar, a nitrogen base, an R group d: a nitrogen base, an amino acid group, a carboxylic acid
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The surface area of a sphere can be approximated as follows:Surface area = 4πr2; where r is the radius of the sphere; π is a constant that is roughly equal to 3. Calculate the surface area of a sphere with a radius of 7 meters using the simple approximation above.

What is intramembranous ossification? the formation of bone from preexisting hyaline cartilage models
the formation of bone from preexisting elastic cartilage models
the formation of bone from preexisting fibrocartilage models
the formation of bone from fibrous membranes

Answers

Answer is (D)

Explanation:

  • Intramembranous Ossification is the procedure in which development of bones from fibrous membranes.
  • It is engaged with the development of the mandibles,the clavicles and the level bones of the skull.
  • Hardening starts as mesenchymal cells structure a layout of things to come bone.
  • They at that point separate into osteoblasts at the hardening community.
  • Osteoblasts emit the extracellular framework and store calcium, which solidifies the network.

Changes that may take place in climates may be due to

Answers

Answer:

Explanation:

The cause of current climate change is largely human activity, like burning fossil fuels, like natural gas, oil, and coal. Burning these materials releases what are called greenhouse gases into Earth's atmosphere.

Is this an observation or an inference: there are tracks from three different animals in the rock.

Answers

it is an inference that
there are tracks from three different animals in the rock.

What is the definition of a Nucleolus?

Answers

The  Nucleolus helps function the cell.

Every year, millions of acres of land are cleared by forest fires. Which of the following best describes a consequence of these catastrophic events?Carbon dioxide levels decrease rapidly in the areas near the fire.
Population sizes will increase as new species move into the cleared area.
Invasive species will quickly take over the disturbed area.
Biodiversity will decrease in the area of the fire.

Answers

Answer:

Biodiversity will decrease in the area of the fire.

Explanation:

Biodiversity will be reduced in the area affected by fire, mainly due to factors such as habitat destruction, pollution and exploration of natural resources.

Habitat destruction occurs as a result of the urbanization, deforestation and development of large agricultural works, this destruction is also caused by globalwarming (or climate change).

In addition, air, soil and water pollution also cause biodiversity loss.

Due to environmental pollution, many species cannot establish themselves, for example due to lack of food, difficulty in accessing drinking water or the emergence of diseases.

Biodiversity can also be threatened by overuse of natural resources such as logging, reducing the number of plants in an ecosystem.

Uncontrolledhunting and fishing are also responsible for reducing the number of individuals of various species.

Biodiversity will decrease in the area of the fire.

The cladogram below was created to show the evolutionary relationships between different vertebrates.Which of the following inferences can be made, based on this information?

a. Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds.
b. Birds and sharks do not share a common evolutionary ancestor.
c. Having a bony skeleton did not provide an evolutionary advantage to sharks or ray-finned fish.
d. Rabbits and primates diverged more recently than crocodiles and birds.

Answers

Answer: a. Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds.

Explanation:

A cladogram is a diagrammatic representation of the phylogenetic relationship of recently evolved species with their common ancestors. The relationship is defined on the basis of genetic, molecular, morphological make up of the organisms. The node in the cladogram defines a divergence or difference between the two taxon.

Birds and amphibians share a more recent common ancestor than shark and birds because they can be seen lying closer at the terminal ends of the cladogram.

The answer for the given question above about a cladogram showing the evolutionary relationships between different vertebrates is option A.  Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds. I hope this helps.
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