<span>There is no primary root. Innumerable thin roots of similar size are present.</span>
Answer:
The frequency of the recessive allele, t is f(t) = q = 0.29.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
This population must have reached carrying capacity.
Carrying capacity of a biological species in a particular habitat refers to the maximum number of individuals (of that species) that the environment can carry and sustain, considering its geography or physical features.
It may also be defined as the population size at which the population growth rate equals zero.
The physical features present in the environment act as limiting factors (e.g. food, water, competition, etc.). Thus, the population limit can be expected to depend on these factors.
The carrying capacity is different for each species in a habitat because of that species’ particular food, shelter, and social requirements.
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Explanation:
Su cantidad y diversidad son enormes. Hay entre 85.000 y 150.000 moluscos, de los cuales el 80-85 por ciento son gasterópodos. Por lo tanto, el mundo alberga más de 60.000 especies de ellas. Los caracoles terrestres varían mucho en tamaño.
Answer:
The correct option is C. Motor neuron does not fire action potentials
Explanation:
During contraction, the motor nerve passes down an action potential. A neuromuscular junction is formed by the motor neuron which stimulates the entry of calcium ions. The calcium ions bind to structures called as troponin which stimulates the binding of the filaments, actin and myosin. The filaments begin to contract by using ATP.
During relaxation, the action potential is stopped. Calcium is taken back into the sarcoplasmic reticulum. As a result, actin and myosin filaments do not link and hence, the contraction is stopped.