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BigorU [14]
3 years ago
8

Manta rays, sting rays, and eagle rays are similar to lampreys in that they have cartilagenous skeletons. how are they different

from lampreys?
Biology
1 answer:
Marina CMI [18]3 years ago
6 0
I think they are different in that they have jaws. Rays are predominantly marine and are found in all the oceans. Many are slow-moving bottom dwellers. They include, Manta ray which is one of the most known type of rays, Spotted eagle ray (pacific ocean), sting ray  among others. They are about 15 types of rays in the oceans.  Sharks, Lampreys and rays, like all fishes they are aquatic, water-breathing vertebrates with a brain and spinal cord, fins, plate-like pairs of internal gills, and paired sense organs. 
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What do you think would happen if a genetic mutation caused a person's digestive tract to have stratified columnar epithelium in
Eddi Din [679]

Answer:

Absorption and secretion would be impossible within the digestive tract.

Explanation:

Epithelium is one of the tissues found in humans. It is classified as either simple or stratified depending on the number of cell layers. Simple epithelial tissues have one layer of cells while stratified have many layers of cells. Based on the shape, epithelial tissues can either be squamous, columnar or cuboidal.

Due to the single-layer of the simple epithelial tissues, they line the walls of secretory or absorptive organs e.g organs of digestive tract. The stratified epithelium is majorly for protective function due to the number of cell layers it possess and not a good type of epithelium for locations where absorption and secretion of substances is common e.g digestive tract.

Hence, if a genetic mutation causes a person's digestive tract to have stratified columnar epithelium instead of simple columnar epithelium, ABSORPTION AND SECRETION of chemical substances, which is a key feature of organs (stomach, intestine) that make up digestive tracts, will be impossible.

8 0
4 years ago
List the four eras on the geologic time scale describe one identifying type of organism from each era
OleMash [197]
<span>Cenozoic
</span><span>Mesozoic
</span><span>Paleozoic
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6 0
3 years ago
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What is reproduction? What are its two types
grin007 [14]

Answer:

Reproduction is when an organism mulitplies and creates descendants. The two types are sexual and asexual  

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Explanation:

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Is there any type of ecological relationship between wolf and moose populations on Isle Royale? If not, explain why not. If so,
Cerrena [4.2K]

The Prey-Predator relationship is the type of ecological relationship between wolf and moose populations on Isle Royale.

<h3>What do you mean by Ecological relationship?</h3>

The Ecological relationship may be defined as the interaction between the members of one species with respect to the members of the other in response to food, shelter, and space.  

Moose are herbivores and the prey of wolfs. It is clearly seen in the graph that when the population of wolves increases, the number of moose decreases. It states that wolfs feed on moose.

Therefore, the Prey-Predator relationship is the type of ecological relationship between wolf and moose populations on Isle Royale.

To learn more about Ecological relationships, refer to the link:

brainly.com/question/2240608

#SPJ2

4 0
2 years ago
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