Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
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<h2>Second law of thermodynamics</h2>
Explanation:
- Living organisms are highly organizational and therefore it seems that it feeds from “negative entropy” or, by other words, maintaining and getting to a stationary condition where the entropy level is low.
- Nevertheless it is necessary to understand that the proper definition of the second law of thermodynamics says that the entropy of an adiabatically isolated system never decreases.
- In this context a living cell or organism is not an isolated system, since it gets the nutrients from the exterior, that is, there is an exchange of heat or matter with the environment, and by doing so, we have to consider the system as an open one, together with its environment, restoring the balance to the universe in an increase of entropy, or by other words, increase of disorder.
A tiger is diurnal because it's awake during the day.
<span>Frog's tongues are attached to the front of their mouths rather than at the back like humans. When a frog catches an insect it throws its sticky tongue out of it's mouth and wraps it around its prey. The frog's tongue then snaps back and throws the food down its throat.</span>
In brain, cerebellum controls the postural muscles and balance the equilibrium. By operating on the cerebral cortex via the thalamocortical projection and on the brainstem, the cerebellum regulates the cognitive and automatic processes of posture-gait regulation.
Both real-time sensory feedback via the spinocerebellar tract to the cerebellum and feedforward information from the cerebral cortex via the cortico-ponto-cerebellar pathway may play significant roles in these processes.
The cerebellum's ability to govern posture is mostly dependent on sensory afferents. Along with the vestibular nuclei, the floccules and vermis of the cerebellum also receive signals from the labyrinth via the vestibular nerve. Spinocerebellar pathways convey peripheral sensory data and a copy of the spinal cord's output to the fastigial nuclei (FN).
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brainly.com/question/13504830
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