The hypothesis is constantly changed because data are still being collected, and due to this, hypotheses are accepted.
Further Explanation:
Protists are considered as first eukaryotes to be identified. They are different from prokaryotes because they have a well-defined cytoskeleton. They consist of different organelles and nuclear envelope. Protists have a varied range of cell surfaces. They can easily stand in an unfavorable environment due to the presence of outer covering. They have flagella for the locomotion. They can either be autotroph and heterotrophs. This is because they ingest food particles by pulling them in the intracellular vesicles referred to as phagosomes or vacuoles. They can produce by means of asexual and also by the sexual method. Protista that produces sexually undergoes meiosis, which is a reductional division resulting in the formation of haploid cells.The progeny that are produced by the union of two haploid cells allowed the formation of new allelic combinations by genetic recombination.
Cladistics is a process of classifying organisms depends upon their shared traits. The cladogram for Protista is continuously altered, and, at times, there are contradictory theories that together have data to support the hypothesis. It is suitable because facts are still being collected.
Learn more:
1. Learn more about the mitosis brainly.com/question/6462270
2. Learn more about the menstrual cycle brainly.com/question/723944
3. Learn more about the meiosis brainly.com/question/94813
Answer Details:
Grade: High School
Subject: Health
Chapter: Protists
Keywords:
Protists, phagosomes, vacuole, sexual method, asexual, collected, allelic combination, genetic recombination, progeny, hypothesis, cladogram.
b. Secondary succession begins on soil and primary succession begins on bare rock
c. Primary succession begins when a natural disaster disturbs an ecosystem and secondary succession does not
d. Secondary succession begins with pioneer species such as lichens, and primary succession begins with shrubs and grasses
Answer:
b. Secondary succession begins on soil and primary succession begins on bare rock
Explanation:
took test :)
Answer:
codons
Explanation:
I think and there are 3 different types
Answer: All chromosomes replicate once in a cell cycle
Explanation :
DNA replication is the action of DNA polymerases synthesizing a DNA strand that is complementary to the original strand or template strand.
In eukaryotes, it is during the S phase of the cell cycle that the vast majority of DNA synthesis occur and the entire genome uncoil and divide to form two daughter cells or copies while In Bacteria, replication begins at the origin of replication, supercoiled DNA is unwound by DNA gyrase, made single-stranded by helicase, and bound by single-stranded binding protein to maintain its single-stranded state.
In Eukaryotic DNA replication. all chromosomes replicate once in a cell cycle and Replication begins at many origins along each chromosome, this is why genome replication of eukaryotes occurs faster than those of bacteteria even thouge their DNA molecules are larger than the DNA molecules of Bacteria.
B. Both are multicellular and haploid, are often found in fossil remains, and have cell walls made of cellulose.
C. Both have cell walls made of cellulose, have xanthophyll as their chief photosynthetic pigment, and are multicellular.
Answer:
The correct answer is statement A.
Explanation:
Green algae belong to the division Chlorophyta and comprise about 9000 to 12000 species. Like higher plants, green algae possess photosynthetic pigments like carotene, chlorophyll a and b, and xanthophyll, in a similar proportion as found in higher plants.
A cell of green algae can be sessile or motile, and exhibits a central vacuole, and possesses a two-layered cell wall formed of cellulose and pectin. The storage of food takes place in the form of starch in the pyrenoids. Thus, due to the similarities in the features between the plants and green algae, it is considered that the embryophytes or the lands plants have emerged from green algae. Hence, statement A supports the belief.
Most scientists believe that green algae are the ancestors of plants due to their similar biochemical features. These include having cell walls made of cellulose, the storage of food material as starch, and the presence of chlorophyll a and chlorophyll b.
According to most scientists, the belief that green algae are the ancestors of plants is best supported by the statement: Both have cell walls made of cellulose, store food material as starch, and have chlorophyll a and chlorophyll b. These characteristics highlight the similar biochemical features that underline the evolutionary relationship between green algae and plants. The presence of cell walls made of cellulose provides structural similarities. Storage of food material as starch indicates similar metabolic processes, and both having chlorophyll a and chlorophyll b reveals their shared capacity for photosynthesis, a defining feature of plants.
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Answer:
Water pollution
Explanation: