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!
Three and Four Kingdom Classification
The two-kingdom classification, while solving many of the problems of classification, failed to establish clear-cut distinction between plants and animals. It also could not indicate correct relationships among organisms. Difficulty was particularly felt at the unicellular level. There are forms like Euglena and Volvox which possess both plant and animal like characters. On the one had like plants they contain chlorophyll and manufacture their food by photosynthesis.
On the other Kind the" actively swim like animals. Due to this reason zoologists classified them with animals under phylum protozoa while botanists included them as plants under Thallophyta. In addition to this, there are some other organisms like Peranema which closely resemble Euglena in structure but lack chlorophyll. These are not included among plants but were always classified under Protozoa. In order to overcome such difficulties, Haeckel (1866) proposed setting up of a third kingdom under the name Protista (meaning the very first) to include all thallophytes and protozoans. This kingdom also included bacteria and blue-green algae. According to this system the old kingdom Plantae included only the members of Embryophyta while Animalia was left only with Parazoa and Metazoa. However, many forms such as blue-green algae and bacteria of Protista lack membrane- bound nuclei. So, a fourth kingdom, Monera, was later established by Whittaker in order to accommodate these forms. From the evolutionary point of view the kingdom Monera is regarded as the most primitive.
Explain Skeletal muscle Skeletal muscle has low activity of glucose-6-phosphate dehydogenase. Yet, like most other tissues it can synthesize ribose-5-phosphate. This is.
Explain about the Bifidogenic Effect? Fructans selectively stimulate the growth of Bifidobacteria and Lactobacilli, while decreasing concentrations of E.coli, Clostridia and ba
classification of virus
Explain Biochemical Tests Bacterial Testing? It deals with the various biochemical tests used to differentiate microorganisms. Identification of an unknown organism isolated fr
Growth Charts Management alone without any standard of comparison do not serve useful purpose. A number of standards have been developed to compare the measurement of any
Solubility and physical properties of protiens Simple proteins Conjugated proteins Derived proteins
Q. How can the features of the arthropod exoskeleton describe the terrestrial adaptation of some species of the phylum? In the arthropod exoskeleton there is a layer of wax whi
In the eukaryotes, eukaryotic release factor eRF-1 recognizes all three termination codons that are UGA UAA, and UAG and, with the help of protein eRF-3, terminates translation.
Photosynthesis happens in algae, green plants and photosynthetic bacteria. Its part is to catch solar energy and use this to drive the synthesis of carbohydrate from water and carb
Q. What are some economic applications that can be generated by very biodiverse ecosystems? Extremely biodiverse areas present huge economic potential and they can be a source
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