To be injured by an animal with poisonous spines, you must: be the aggressor and touch the animal first.
<h3>What is the use of spines in animals?</h3>
- Spines are hard, needle-like anatomical structures found in both vertebrate and invertebrate species.
- The spines of most spiny mammals are modified hairs, with a spongy center covered in a thick, hard layer of keratin and a sharp tip.
- Spines on an animal’s body help defend it.
- They can be irritating or painful, or difficult to swallow.
- Spines are also important tools for communication, shock absorption, and rain protection.
- Animals like porcupine shoot their spines (quills) for defense. Some spines can also pass through gloves.
- To prevent attacked by an animal with poisonous spines you must remain calm and observe your surroundings.
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What cells are you talking about?
The correct answer is (b.) euglenophytes. Phosphorescence is a phenomenon associated with an algal division called euglenophytes. Euglenoids are one of the most known flagellates which are excavated eukaryotes of the phylum euglenophyte. Euglenophytes are single-celled plant-like protists that have no cell wall.
Answer:
You'd want to examine homologous structures in fossil remains. This can give a geologic time scale of evolution within certain fossil groups. ... Fossil evidence can give a general timeline for the common ancestor or origin or homologous structures as well as how they have changed since then.
Explanation:
