Pteridophytes and phanerogamic plants
Why the pteridophytes are better adapted to the dry land as compared to the bryophytes? Were pteridophytes always less abundant rather than the phanerogamic plants?
Expert
Though bryophytes and the pteridophytes have water-dependant gametes for the fecundation emergence of conductive vessels in this last group facilitated life within the terrestrial environment. Conductive vessels of pteridophytes gathered the water from moist soil and distribute it to the cells. Bryophytes do not have this option and they depend entirely upon the water that arrives at the aerial part of plant and thus they need to live within the humid or rainy places. Before ascension of phanerogamic plants (plants which have the seeds) the pteridophytes were the plants which predominated within the terrestrial environment. The large pteridophyte forests of the Carboniferous period (which is named after the pteridophytes) are responsible for the formation of coal deposits, majorly in the Asia, Europe, and North America; the Carboniferous period occurred between 290 and 360 million years ago and is the part of Paleozoic era.
Fundamental vs. Technical analysts: Fundamental analysts believe that there is an intrinsic value for a stock market, various industries and individual securities and that these values dep
Specify some of the essential neurotransmitters?
Is the base applied whenever we make grooves and locks for the amalgam retention?
Describe the main proteins which constitute the sarcomere? Describe the function of such molecules in the muscle cells?
Do you know how the dose for children is being estimated based on preclinical data?
It is an imperative that when formulating Operational plans the environments in which the business operates in are considered, identify the environments and the tools used to analyze the impact of environment each on planning.
Write down the main symptoms of pulmonary and of intestinal phases of the ascaris infestation?
Give a brief description of phototropism?
Specify the physiological cause of syndrome which is known as cretinism?
Name the two groups of defense mechanisms of the body against foreign or injurious agents? Explain the difference among them?
18,76,764
1928345 Asked
3,689
Active Tutors
1429456
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!