--%>
Assignment Help - homework help

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?

E

Expert

Verified

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.

   Related Questions in Biology

  • Q : Formation of cations What are the

    What are the preferable situations for the formation of cations?

    		•
  • Q : Characteristics of Learning

    The following characteristics appear in some form in the more popular conceptions: Learning Organizations, 1) Provide continuous learning opportunities. 2) Use learning to reach their goals. 3) Link individual performance with organizational performance. 4)

    		•
  • Q : Hemoglobin and oxyhemoglobin How

    How dissimilar are hemoglobin and oxyhemoglobin? Where is it expected to get a higher concentration of oxyhemoglobin, in peripheral tissues or in lungs?

    		•
  • Q : Respiratory system of living-beings of

    Determine how respiratory system of living-beings of the phylum Annelida characterized?

    		•
  • Q : Typical shape of population growth curve

    Write down the typical shape of a population growth curve? How can biotic potential be represented in same way graphically?

    		•
  • Q : Delegation of the authority Delegation

    Delegation of the authority Meaning & definition: delegation is a process of sharing work and authority between a manager and his subordinates.

    		•
  • Q : Main prophylactic measures against the

    Write down the main prophylactic measures against the hookworm disease?

    		•
  • Q : Classes in which phylum Arthropoda is

    Name the classes in which phylum Arthropoda is divided? Write down the three main ones and some of their representative species?

    		•
  • Q : Family and Social Factor - Personality

    The development of the individual proceeds under the influence of many socializing forces and agencies, from nuclear family to more distant or global groupings. In order to understand the effects of a family on individual's personality, we have to understand the socialization process and

    		•
  • Q : Function of gastrin in the digestive

    How gastrin is produced and what is the main function of gastrin in the digestive procedure? Answer: The existence of food in the stomach stimulates the secretion of

    		•