Answer:
Comparative anatomy and genetic analysis
Explanation:
Comparative anatomy is less reliable as it is the process of comparing two species physically to determine how related they are. This can be effective in certain cases, such as big cats, that all look similar because they are closely related. This doesn't always work though because species in similar environments can adapt similar traits for survival. For example, dolphins and sharks have fins but different ancestors. DNA analysis is more accurate. More similar DNA = closer relation between organisms.
Answer:
The correct answer is c) action potential
Explanation:
Action potential starts with the opening of the sodium channel in response to the stimulus given to the neuron by neurotransmitter. This opening of sodium ion channel results in the influx of sodium ions in the receptive region of neurons from outside. This is the depolarization step of action potential.
Before this step, the neurons are negatively charged from inside and positively charge outside and this stage it is considered to be resting stage.
As the amount of Na⁺ reaches the threshold value the action potential fires and send the electric signals down to axons.
Therefore action potential occurs because of the influx of Na⁺ ions through chemically gated channels in the receptive region of a neuron.
I have the same problem i need the answer for it .
Answer:
option (C) is your answer
I hope it's helps you
Answer: Sea anemone and ctenophore both inherited tentacles from a shared ancestor population, but this population separated into different environments. In each environment, different types of tentacles evolved, which helped the populations survive.
Explanation:
most likely explains why both species have tentacles and why the tentacles are different is because sea anemone and ctenophore both inherited tentacles from a shared ancestor,
Then, this population separated into different environments and there was tye evolvement of different types of tentacles evolved, which therefore helped the populations survive.