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.
excretory organs of different animals from protozoa to mammals
Q. What are the most common methods of female and male surgical sterilization? Vasectomy is the majority common method of surgical sterilization in men in vasectomy the vas def
What is the concept of Lophophore? A unique double ring of hollow ciliated tentacles that surround the oral opening in some animal phyla. There is some debate as to whether the
Distinguish features in the mechanisms of RNA synthesis, + (RNA), (-) RNA, and ds RNA viruses.
What is cloning? The Cloning is the making of an organism genetically identical to another by means of genetic engineering. The foundation of cloning is the nucleus transpla
Define Gonads and Reproductive System? With aging, there is decrease in pituitary hormone secretion causing decrease in gonadal hormone production, which causes number of chang
Heat-shock Response When growing plantlets or tissues of plants are shifted to 42°C and above, the synthesis of normal proteins rapidly declines and instead a set of new prote
FAT METABOLISM Animals digest and utilize three main types of fatty compounds or lipids neutral or true fats ( triglycerides ), phospholipids and sterols. Endproducts
Q. Is herbivorism a form of predatism? The Herbivorism is a form of predatism in which first order consumers feed from producers (plants or algae). For instance, fruits and bir
Explain the groups of diabetes food pyramid The six groups of diabetes food pyramid are shown in Figure below. 1) Fat, oils and sweets (smallest group) 2) Milk 3) Mea
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