Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Why are pteridophytes better adapted to dry land than bryophytes?
Were pteridophytes always less abundant than phanerogamic plants?
Although pteridophytes and bryophytes have water-dependant gametes for fecundation the emergence of conductive vessels in this last group facilitated life in a terrestrial environment. The conductive vessels of the pteridophytes collect water from the moist soil and distribute it to the cells and Bryophytes do not have this alternative and they depend entirely on the water that reaches the aerial part of the plant and so they need to live in rainy or humid places.
Before the ascension of the phanerogamic plants (plants that present seeds) the pteridophytes were the plants that predominated in the terrestrial environment and the large pteridophyte forests of the Carboniferous period (named after the pteridophytes) are responsible for the formation of coal deposits that mainly in Asia, Europe and North America the Carboniferous period occurred between 290 and 360 million years ago and is part of the Paleozoic era.
Indications For Surgery : The normal aortic valve area in the adult is about 3-4 cm2. Significant symptoms occur when the valve area is seduced to 1/4"' the normal area
a) How does the Hardy- Weinberg's expression (p²+2pq+q² =1) Describe that genetic equilibrium is maintained in a population? (b) List any two factors that can disturb the ge
How will the urine concentration be affected if the henle''s loop of a person is removed and his PCT is joined directly with DCT?
Q. Difference between plant systematic and taxonomy? Before coming to principles of taxonomy let us discuss the difference between taxonomy and systematic. Systematic is the sc
Define National Iodine Deficiency Disorder Control Programme (NIDDCP)? The prevalence of iodine deficiency disorders (IDD) are seen more among adolescent's young adults and sc
what is copulation
What is the inactivation of the X chromosome? What is a Barr body? Inactivation of the X chromosome is a phenomenon that happens in women. As women have two X chromosomes only
Describe TS Murmur and their characterstic ? Characteristic: It is a rumbling, and diastolic murmur heard at left lower sterna border that increases with inspiration. An OS may
Define Changes in Food due to Concentration Process? Obviously concentration that exposes food to 100°C or higher temperatures for prolonged periods can cause major changes in
Is the nervous system in platyhelminthes more or less sophisticated than in cnidarians? What are the main neural structures found in flatworms? How is this neural organization impo
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd