The condition in which an organism has extra sets of chromosomes is called polyploidy.

Answers

Answer 1

Answer: The statement above is a true statement. The condition in which an organism has extra sets of chromosomes is called polyploidy. This polyploidy cell is an organism that has two sets of chromosomes. Most species have two sets of chromosomes, each one of these are inherited from the parents.

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The fossil of a plant reveals that it produced spores that were used for reproduction. Which type of plant was it

Answers

Answer;

Seedless plant.

The fossil of a plant reveals that it produced spores that were used for reproduction. It was a seedless plant.

Explanation;

-Seedless vascular plants are plants such as fern and horsetails, liverworts, mosses; which contain vascular tissues, but do not produce flowers or seed.

-These plants reproduce using haploid , unicellular spores instead of seeds.

-These plants have life cycles with two distinct stages; one in which spores are produced and one in which sex cells are produced.

Which type of RNA carries a genetic code from DNA to the ribosome?A) mRNA
B) qRNA
C) rRNA
D) tRNA

Answers

Answer:

(A). mRNA.

Explanation:

During protein synthesis, information present in DNA as triplet codons gets transferred to mRNA molecule, by the process of transcription. The mRNA than gets transported to the cytosol, where it associates with ribosomes.

Ribosomes are known as protein factories of the cells as they provide platform for translation. During translation, information present in mRNA is used to translate polypeptide chain or protein as each codon codes for a specific amino acid.

Thus, the correct answer is option (A).

Which marine ecosystem contains the fewest producers?A.Intertidal zone
B.Near shore zone
C.Coral reef
D.Open ocean

Answers

Answer;

D. The Open Marine ecosystem

Explanation;

An ecosystemis the lowest level of environmental complexity that includes living (biotic factors)and nonliving factors (abiotic factors).

-The Open marine ecosystem contains the fewest photosynthetic producers, this is because most producers can't live or survive in an areas with the lack of nutrients or sun light. They need nutrients for growth and also sunlight to undertake the process of photosynthesis which helps them make their own food.

Final answer:

The D. open ocean is the marine ecosystem that contains the fewest producers, such as phytoplankton.

Explanation:

Marine ecosystems are diverse and complex aquatic environments found in oceans, seas, and coastal regions. They support a wide range of life forms, from microorganisms to large marine mammals. These ecosystems play critical roles in Earth's climate regulation, nutrient cycling, and food production, making them vital for global ecological balance.

The marine ecosystem that contains the fewest producers is the open ocean. The open ocean is characterized by low levels of nutrients and sunlight, which limits the growth of producers such as phytoplankton. Instead, the primary producers in the open ocean are photosynthetic bacteria and archaea, which can thrive in these extreme conditions.