Non-vascular plants are plants grouped as bryophytes which includes hornworth, liverworth and mosses while vascular plants are plants grouped as tracheophytes which includes angiosperms, ferns and gymnosperms. In vascular plants, there is presence of Pholem and xylem (vascular tissues) which are used to transport food, water and mineral throughout their bodies while it is absent in non-vascular plants.
Polar bears I’m pretty sure
Answer:
Option-A
Explanation:
In the given question, since the examiner has mentioned the time that the factor the researcher should include during the development of a new drug is "the placebo". A placebo is used during the experiment as control by and its effect depend on the expectations of the patient since the placebo does not contain the active drugs.
The FDA approval, informed consent and the information are not used until the study is going on.
Thus, Option-A is the correct answer.
Answer:
Option (2).
Explanation:
Neural impulse may be defined as the the way by which nerve cell can communicate with each other in the body. These nerve impulse travels in the form of electrical signals in the neurons.
The strength of the nerve impulse changes in the different neuron. The neural impulse in a single neuron has the same strength each time when the neuron fires.
Thus, the correct answer is option (2).