The right option is; D
Establishment of communities in newly formed environments, such as volcanic lava flows or sand bars, is called primary succession. Development of new communities in disturbed environments, such as a burned or clear cut forest, is called secondary succession.
Primary succession is a type of ecological succession (changes) which occurs when communities of organisms establish new habitat in areas that are not capable of sustaining life due to various events such as volcanic lava flows, sand bars, oil spills, flooding, and landslides.
Secondary succession occurs when a smaller scale disturbance such as forest fire affect a stable existing ecosystem. Such disturbances support the reappearance of life because it does not remove all organisms and nutrients from the existing ecosystem.
Answer:
D. primary succession, secondary succession
Explanation:
Transfer RNA (tRNA) carries amino acids to the site of protein synthesis.
In general , tRNA is responsible for carrying amino acids to the ribosomes, the site of protein synthesis, during the process of translation. Each type of tRNA molecule is specific to a particular amino acid. The tRNA binds to the appropriate amino acid and delivers it to the ribosome, where it is incorporated into the growing polypeptide chain according to the sequence of codons in the messenger RNA (mRNA) molecule.
This process ensures that the correct amino acids are assembled in the correct order to form a functional protein. Transfer RNA is a type of RNA molecule that plays a crucial role in protein synthesis. It has a unique cloverleaf-like secondary structure, with three important regions: The acceptor stem: This region is at the bottom of the cloverleaf and is where the specific amino acid attaches to the tRNA.
The anticodon loop: This region contains three nucleotides that are complementary to the codon on the messenger RNA (mRNA) during translation.
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b. The second word indicates the organism's genus classification.
c. The first word indicates the organism's genus classification.
d. The first word is always lowercase.
The accurate description of binomialnomenclature naming system is as follows: first word indicates the organism'sgenusclassification.
The binomial nomenclature contains two names for naming living organisms. The binomialnomenclature was initiated by Carolus Linnaeus.
The binomial nomenclature is made up of the following:
Therefore, the accurate description of binomialnomenclature naming system is as follows: first word indicates the organism's genus classification.
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Answer;
C. The first word indicates the organism's genus classification.
Explanation;
-The binomial nomenclature system combines two names into one to give all species unique scientific names. The first part of a scientific name is called the genus. The second part of a species name is the species name.
-There are rules to follow when writing a scientific name, these includes;
-The genus name should always be written first, underlined or italicized and capitalized.
-The specific epithet is always written second, underlined or italicized and never capitalized.
B) All invertebrates are chordates; vertebrates are a group that is separate from both invertebrates and chordates.
C) All invertebrates are chordates; vertebrates are a group that is separate from both invertebrates and chordates.
D) Chordates are the largest group, and it is subdivided into two groups: vertebrates and invertebrates.
Answer:
The most appropriate answer would be option A.
The chordates refer to the organisms which belong to the phylum Chordata. They possess anatomical features like notochord, pharyngeal slits, dorsal nerve cord, post-anel tail, and endostyle during some period of their life cycle. They include classes amphibians, fish, reptiles, birds, and mammals. These organisms are believed to share a common ancestor.
In contrast, invertebrates refer to the organisms which lack a vertebral column. They include all the organisms other than vertebrates. For example, they include arthropods, mollusks, annelids, and cnidarians.
B Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time
C Mutations help stabilize the genetic variation within a population, and only one or two variants generally provide an advantage to individuals.
D Mutations help reduce the genetic variation within a population, and thus increasing the rate that new adaptations develop.
The role of mutations in evolution by natural selection is option b. Mutations increase the genetic variation within a population.
The mutation is significant as the first step of evolution since it developed the new DNA sequence for the specific gene that developed the new allele.
Also, at the same time, it rise the genetic variation within the population also it provides as an advantage to individual
hence, the option b is correct.
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Answer:
B. Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time