Answer:
The rate of reproduction.
Explanation:
It should be understood that poiklothermic animals are the animals that do not have constant body temperature. This means that their temperature changes in accordance to the temperature of the environment. Examples of such organisms are reptiles and Pisces, fishes, among others.
The homeothermic animals are the animals that are capable of maintaining their body temperature.
Homeotherm is usually applied to animals that can maintain a constant body temperature through metabolic processes endotherms.
It should be understood that endothermy is the process of maintaining body temperature through internally generated metabolic heat
Examples of endothermic homeotherms are bird and mammals, these animals have a high metabolic rate.
In conclusion, the population of poiklothermic animals are more than that of homeothermic animals because of the rate of their reproduction. The poiklothermic animals reproduce in high numbers when compared to the the homeothermic animals.
Cells with a nucleus are called Eukaryotes. Eukaryotic cells also have membranes around the organelles. Cells without a nucleus are called Prokaryotes. Prokaryotic cells do not have membranes around their organelles.
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Answer:
The correct answer is option B) "habitat isolation".
Explanation:
The two populations of ticks herein described have preference in one of two populations: either over mule deers or white-tail deers. One term that might be applied to describe these populations is habitat isolation. Habitat isolation occurs when the chances of mating between individuals of the same species are lowered because of differences in habitat preference. This is the case for the two populations of ticks, where because of differences in host preference, the ticks that feed from mule deers are isolated from the ones that feed from white-tail deers and vice-versa.
Electrophysiological studies of rats learning T-mazes have found a. different patterns of activation in the basal ganglia during early learning and later stable performance
Explanation:
- Forced alternation and left-right discrimination tasks using the T-maze have been widely used to assess working and reference memory, respectively, in rodents.
- Basal ganglia are strongly interconnected with the cerebral cortex, thalamus, and brainstem, as well as several other brain areas. The basal ganglia are associated with a variety of functions, including control of voluntary motor movements, procedural learning, habit learning, eye movements, cognition, and emotion.
- The direct pathway, sometimes known as the direct pathway of movement, is a neural pathway within the central nervous system (CNS) through the basal ganglia which facilitates the initiation and execution of voluntary movement.
- Damage to the basal ganglia cells may cause problems controlling speech, movement, and posture. This combination of symptoms is called parkinsonism. A person with basal ganglia dysfunction may have difficulty starting, stopping, or sustaining movement.
