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ICE Princess25 [194]
3 years ago
15

By definition a clade is _____. see concept 26.3 (page 557) view available hint(s) by definition a clade is _____. see concept 2

6.3 (page 557) monophyletic paraphyletic polyphyletic parsimonious analogous
Biology
2 answers:
WINSTONCH [101]3 years ago
8 0

Answer:

Monophyletic

Explanation:

A clade refers to a group of organisms with common ancestor. Since derived characters originate from common ancestor, species in a clade share derived characters. An ancestral species and all its descendants form a monophyletic taxon. Since clade include species from a common ancestor, it is monophyletic in nature.

stealth61 [152]3 years ago
4 0
<span>A clade is termed as a monophyletic.

 A group which includes ancestral species and its descendants. Clades are nested to one another whereby each branch splits into small branches. The splits reflect evolutionary history as the population evolve independently and diverges.

A good example of a clade is insects or rodents; this is because their name refers to a common ancestor with descendant branches all over. For example rodents, they are the branch of mammals which splits off the end of the period.</span>
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pretend that you touch a hot pan on the stove, and you immedentially pull your hand away without thinking about it. in this scen
slamgirl [31]

Answer:

The stimulus the thing that stimulates you is the hot pan because you were du.mb and decided to touch the hot pan. The response is you yanking your hand away from the heat because for some reason you thought touching a hot pan was a good idea.

Explanation:

Dude seriously, be conscious.

8 0
3 years ago
In a common reflex arc, after a sensory nerve signal is processed by interneurons in the integration center, where does the sign
kobusy [5.1K]

In a reflex arc, after a sensory nerve signal is processed by interneurons in the integration center, the signal goes to the motor neuron. The answer is motor neurons.

<h3>What is the reflex arc?</h3>

The reflex arc refers to the sequence of events since the body receives an external stimulus until it reacts.

In general terms,

1) A stimulus of varying nature reaches the body.

2) The peripheric nervous system -PNS- receives the stimulus and sends this information to the central nervous system -CNS-.

3) The CNS processes the information and sends another signal as a response to the stimulus.

Five elements compose the reflex arc, which are receptors, three types of neurons, and effectors.

The neurons involved in the mechanism are:

• Afferent or sensorial neurons

• Interneurons

• Efferent or motor neurons

Mode of Action:

  • <u>Ascending branch</u>

The stimulus reaches the body and is received by the specialized sensory receptors.

Afferent neurons, placed in the dermis and epidermis, receive this information from receptors, react and send it to the central nervous system as nerve impulses.

  • <u>Descending branch</u>

Interneurons in the CNS, process the information and send a motor response.  

Efferent neurons carry the response from the CNS to the effector organs, which might be either a muscle or a gland.

Finally, the target tissue responds to the stimulus as a contraction -muscle-,or as hormones release -gland-.

A motor neuron is formed by a cellular body, dendrites (cytoplasmic extensions that receive stimuli from other cells), and a long axon that is capable of conducting the electrochemical signals.

The axon brunches out into several extensions when it approaches the muscle.

At the end of each brunch, the axon is inserted in the muscle fiber surface, composing neuromuscular join.

This is the last part of the NS involved in the process before the muscle contracts.

After a sensory nerve signal is processed by interneurons in the integration center, the signal goes to the motor neuron, and from there to the effector.  

The corrct answer is motorneuron.

You can learn more about the reflex arc at

brainly.com/question/894334

#SPJ1

3 0
1 year ago
Which conditions are possible reasons for declining genetic diversity of a species?
maw [93]

Answer: I would say inbreeding

Explanation:

Inbreeding can cause offspring to have impaired ability to survive and reproduce, as they can inherit harmful mutations. They have a lesser chance of survival than other individuals in their species who are not products of inbreeding.

6 0
3 years ago
The El Niño Southern Oscillation phenomenon provides good opportunities to study:
xeze [42]
The El Nino Southern Oscillation phenomenon provides good opportunities to study effects on climate variability on human health. The correct answer is D. 
6 0
3 years ago
The change in the dominant, meaning more common, fur color from tan to brown is most likely due to ____.
Serggg [28]

Answer:

d

Explanation:

body size has nothing to do with color. increased number of hunters doesn't work because environment isn't mentioned (i.e. if it was a snow environment it wouldn't make sense). random mutations have to have environmental cause to prevail. so it is d.

7 0
2 years ago
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