Which of the following are characteristics of all animals?
A.multicellular, haploid cells that divide by mitosis, organisms with organ systems
B.multistage zygote development, vertebrates, reproduce sexually
C.99 percent invertebrates, heterotrophs, multicellular
D.both a and c.
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Answer C.
To determine which of the given options are characteristics of all animals, let's break down each option and see if they fit the criteria:
A. multicellular, haploid cells that divide by mitosis, organisms with organ systems
- This option describes the characteristics of most animals. Animals are typically multicellular and have organ systems, but not all animals have haploid cells or divide by mitosis, so this option is not correct.
B. multistage zygote development, vertebrates, reproduce sexually
- This option describes some characteristics of animals but not all. While many animals reproduce sexually and go through a multistage zygote development, not all animals are vertebrates. Therefore, this option is not correct.
C. 99 percent invertebrates, heterotrophs, multicellular
- This option describes characteristics that are true for all animals. Invertebrates are animals without a backbone, and the majority of animal species are invertebrates. Additionally, all animals are multicellular and heterotrophs (meaning they obtain nutrients from external sources). Therefore, this option is correct.
D. both A and C.
- Since option A is not correct, option D cannot be correct either.
Therefore, the correct answer is option C: 99 percent invertebrates, heterotrophs, and multicellular.