1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mixas84 [53]
3 years ago
14

How jelly fish used jet propulsion effect in its locomotion

Biology
1 answer:
3241004551 [841]3 years ago
6 0

dichotomies exist within the swim systems of jellyfish—one centered on the mechanics of locomotion and the other on phylogenetic differences in nervous system organization. For example, medusae with prolate body forms use a jet propulsion mechanism, whereas medusae with oblate body forms use a drag-based marginal rowing mechanism. Independent of this dichotomy, the nervous systems of hydromedusae are very different from those of scyphomedusae and cubomedusae. In hydromedusae, marginal nerve rings contain parallel networks of neurons that include the pacemaker network for the control of swim contractions. Sensory structures are similarly distributed around the margin. In scyphomedusae and cubomedusae, the swim pacemakers are restricted to marginal integration centers called rhopalia. These ganglionlike structures house specialized sensory organs. The swim system adaptations of these three classes (Hydrozoa, Scyphozoa, and Cubozoa), which are constrained by phylogenetics, still adhere to the biomechanical efficiencies of the prolate/oblate dichotomy. This speaks to the adaptational abilities of the cnidarian nervous system as specialized in the medusoid forms.

You might be interested in
Mr. Zee is prescribed an inhaled nasal steroid to relieve his symptoms associated with seasonal allergies. What is true about in
Lelu [443]

Answer:

The provided question is incomplete as there is no option available however the generalized answer would be -

The correct answer would be - For treating the global symptoms related to the allergies, it is known as that the inhaled nasal steroids are far more effective than oral medications.

Explanation:

Nasal steroids are the steroids that relieve congestion problems by decreasing the inflammation in the nose of an individual. These are then inhaled by the nose which directly sprays into nasal passages.

In comparatively the oral steroids take time to show their impact on the individual and even the impact is considered not as effective as the inhaled nasal sprays.

Thus, the correct answer is - For treating the global symptoms related to the allergies, it is known that inhaled nasal steroids are far more effective than oral medications.

4 0
3 years ago
1. How would the predation of pythons on rabbits affect the population of other large predators such as bobcats and alligators?
Inessa [10]

Q1:

Answer:

Studies have reported that due to predation of pythons on rabbits, the population of other predators is badly affected.

Bobcats are a natural predator of rabbits thus they come in a competition with pythons for food. As pythons are more powerful so they target rabbits more easily than Bobcats. The population of Bobcats has been declined by 90% or more due to the establishment of pythons in the Everglades.

<em>Alligator mississippiensis </em>or American alligators are also abundant in Everglades and just like Bobcats they compete with pythons for their food. They can even kill pythons if pythons are smaller in size than them, but python will kill alligator if he is of smaller size. Although rabbits are food for both alligator and Python but Alligator is a key stone specie and it has very important ecological role, because it digs holes in land that retain water upon rainfall. These water hole provide water in the extreme dry weather and help in survival of other small specie like insects and birds.

So, we can expect the population of Alligator, Bob cats and other small insects and birds to decline rapidly if Python population kept on increasing with same speed.

-------------------------------------------------------------------------------------------------------------

Q2:

Answer:

There is no doubt that Pythons pose serious threat for both humans as well as survival of other organisms like Alligators and birds. However, I donot think that “Python challenge” is a reasonable way to kill or remove Pythons. Because It can threat the lives of many individuals who take part in competition, although they are trained but still they are nor professionals and get training of only few weeks so it is not safe competition.

There should be some strategy of introducing natural predators like Brown beers, Cougars and Alligators which can kill python naturally without staking the life of humans at risk.


Hope it helps!

6 0
4 years ago
HELP PLEASE<br> Why do you think genetic diversity is an advantage of sexually reproduction?
Delvig [45]

Answer:

Genetic diversity is an advantage of sexual reproduction because it reduces the occurrence of unfavorable genetic traits and a variety of genes would lessen the chance of the extinction of a population due to environmental changes. The variation between a genetically diverse species will guarantee at least some of it survive when presented with different climates or challenges.

8 0
3 years ago
Decomposers are organisms that
soldi70 [24.7K]

Answer: Breaks down, decomposes. Decomposers include bacteria and fungi.

6 0
4 years ago
which of the following inferences about mrs.annie johnson is best supported by the first paragraph of the excerpt
Anarel [89]
Don’t see the paragraph
4 0
3 years ago
Other questions:
  • A client admitted with anorexia nervosa lost 30 lb (13.6 kg) during the previous 3 months. when planning this client's care, wha
    10·1 answer
  • A formal decision by a governing body is known as a(n) ___________. A. amendment B. resolution C. catayst D. contingent Please s
    6·2 answers
  • Which of the following is not an example of a watershed?
    10·1 answer
  • Many of the molecules in living cells are so large that they are known as
    12·1 answer
  • What physiological change happens when a patient is asleep?
    7·1 answer
  • Mammals do not live in the tundra, because the climate is too extreme. Please select the best answer from the choices provided T
    14·2 answers
  • When the condenser airflow is restricted,
    9·2 answers
  • Features that result directly from wave erosion include-
    6·2 answers
  • How do the specialized structures of a cell relate to its function?
    12·1 answer
  • Please help me with this prefix meaning for my biology quiz
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!