Answer:
A. Lancelet
B. All chordates
Explanation:
A. Dorsal nerve chord is the only <u>unique feature</u> among all members of <u>phylum chordata</u> (mainly found in subphylum Vertebrata). In the given list, only lacelet is the Chordate whereas <u>snail belongs to phylum Mollusca</u>, <u>grasshopper belongs to Arthropda</u>, and <u>jellyfish belongs to Cnidaria</u>. Dorsal nerve cord runs along the length of organism's body.
B. <u>Gill slits</u> are <u>opening structures</u> to gills through which water passes from pharynx/throat to exterior. Their main purpose is to help filter the food particles available in surrounding water. Although they are typical for amphibians and fishes, chordates also possess gill slits at embryonic stages.
Eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation is true.
<h3>
What is genetic material?</h3>
Genetic material is defined as anything with genetic information that can be passed from one generation to the next, whether it be from a plant, animal, microbial, or other source.
It can also be defined as the means by which knowledge is passed from one generation to another.
There are basically three types of genetic materials.
Some of the properties of genetic materials are:
- It has to be secure.
- When necessary, it must be able to be expressed.
- It must be able to replicate information accurately.
- It must be passed unchanged from father to offspring.
Thus, eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation is true.
To learn more about genetic material, refer to the link below:
brainly.com/question/14530382
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Answer:
Ammonites were common during the Mesozoic Era (245 to 65 mya), They were not found after the Cretaceous period, as they went extinct during the K-T extinction (65 mya).
Explanation:
I didn't get it ...
can you explain that question
