The question is incomplete as it does not have the options which are:
A) roots. B) spores. C) seed pods. D) chlorophyll.
Answer:
A) roots
Explanation:
The vascular plants are evolved from the Bryophytes which are evolved from the algae.
The algae are non-vascular plants and Bryophytes too. The vascular plants developed the vascular tissue to transport the absorbed water and nutrients from the terrestrial surface.
The plants living during the Devonian period possessed the vascular tissue to transport the nutrients but to absorb the nutrients and water, they also possessed the roots.
Thus, Option-A is the correct answer.
The correct answer is that the axon would not be able to produce action potentials.
Majorly all the pufferfish comprises of tetrodotoxin, an element that produces foul tasting and is generally lethal to fish. In the case of humans, tetrodotoxin is hazardous, that is, up to 1200 times more poisonous in comparison to cyanide. There is an adequate toxin in one pufferfish to kill 30 adult humans and there is no antidote.
Answer:
review all proposals for animal research to be sure the procedures to be used are appropriate and humane.
Explanation:
The Institutional Animal Care and Use Committee (IACUC) is a federal committee responsible for approving and/or prohibiting the use of animal (nonhuman vertebrate) subjects for research, testing and teaching purposes, as well as the inspection of animal facilities. IACUC evaluates the institution's animal programs and procedures as described by the Office of Laboratory Animal Welfare (OLAW). This committee has the task to verify animal's well-being by minimizing pain and distress (for example, by ensuring the use of non-invasive methods when possible). Researchers/educators that use animals for research/teaching purposes must previously submit a written request defined by the IACUC's guidelines.
C is the correct answer to this question
