The different types of plant tissues are:
1. Meristematic tissues - It is of three types: Apical, Lateral and lntercalary.
2. Permanent Tissue - It of two types: Simple and Complex tissues. Simple tissues are of three types Parenchyma, Collenchyma and Sclerenchyma.
Complex tissues are of two types - Xylem and Phloem.
Answer:
A- Acetylcholine is released by axon terminals of the motor neuron.
Explanation:
The general mechanism of muscle contraction can be explained as follows:
a) The action potential which is generated, travels along the motor nerve to its ends on muscle fiber (or motor end plate) at the neuro-muscular junction.
b) The nerve endings then secrete small amounts of neurotransmitter called acetylcholine.
c) The actylecholine binds to the receptors on the membrane of muscle fiber and opens the voltage gated sodium channels.
d) Opening of these channels leads to flow of large quantities of sodium ions into the muscle fiber which ultimately results in initiation of action potential in muscle fiber.
e) This action potential depolarizes the fiber including the T-tubules, triggering the release of calcium ions from sarcoplasmic reticulum.
f) The calcium ions thus released initiated the process of muscle contraction.
Scientific information refers to the classification, collection, dissemination, and retrieval of recorded knowledge treated both as a pure and as an applied science. The two features of a scientific information source, which may suggest that the information is not reliable are:
1. The information is based on data that are not peer-reviewed, that is, the information has not been reviewed by the experts in the field, or is not encouraged by an accord of experts in the field.
2. The references are not cited, that is, it not clear or not known that from where the information originated.
A. Titanium. Titanium's atomic weight is 47.867
It is A, i hope this answer helps!
