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Biology for NEET/ AIIMS/JISPER/BHU/NCERT/B.Sc
Pteridophytes are divided into four divisions.
1. Psilophyta/Psilopsida
E.g. Psilotum, Rhynia
2. Lycophyta/Lycopsida
E.g. Lycopodium, Selaginella
3. Sphenophyta/Sphenopsida
E.g. Equisetum, Hynia
4. Pterophyta/Pteropsida
E.g. Pteris, Adiantum
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Biology for NEET/AIIMS/JISPER/BHU/NCERT etc. (Bilingual : English-Hindi)
Pteridophytes are first group of terrestrial plants which are vascular . They possess vascular tissues like xylem and phloem. Vascular tissues are organised into Steles. Steles are central vascular cylinders found in the main axis of the vascular plants. Steles consist of xylem, phloem, pith( if present ) etc. They are delimited by pericycle from the cortex.
Types of Steles in Pteridophytes
1. Protostele
2. Siphonostele
3. Dictyostele
4. Eustele
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इस ट्रिक से आप Plant Macronutients के नाम आसानी से याद कर सकते हैं।
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Pteridophytes are sporophytic seedless vascular cryptograms. They have true leaves, stem and roots. They are mainly terrestrial, found in moist shaddy places.
Division Pteridophyta includes Ferns, Horsetails etc.
Characteristics
1. Sporophytic Plant body
2. Vascular plants
3. Non flowering plants
4. True Leaves, Stem and Roots are present
5. Cones/Strobilus are present
6. Homosporous or Heterosporous
7. Commonly known as ''Botanical Snakes''
Examples of Pteridophytes
Lycopodium
Selaginella
Equisetum
Marsilea
Azolla
Salvinia
Adiantum
Pteris
etc.
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There are many differences found between Bryophytes and Pteridophytes which are as follows......
Bryophytes Pteridophytes
1. Gametophytic 1. Sporophytic
2. Non Vascular 2. Vascular
3. Sporophyte 3. Sporophyte
Dependent Independent
4. leaves, Stem 4. Present
and Roots
Absent
5. 'Ambhibians of 5.'Botanical Snakes'
Plant Kingdom'
6. Capsule Present 6. Cone Present
Other differences are also found. Watch complete video for better understanding.
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Biology for NEET/AIIMS/BHU Medical/JISPER/NCERT.
Bryophytes are economically as well as ecologically very important. Many commercial products like PEAT, Antiseptics etc. are obtained from Bryophytes. Apart from economic importance Bryophytes play key role in xerophytic plant succession.
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NEET Biology
In this video we have discussed all about the life cycle of bryophytes. This lecture also covers the topic alternation of generations in Bryophytes.
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Division Bryophyta is divided into three main classes which are as follows.
1. Hepaticopsida (Liverworts)
E.g. Marchantia, Pellia, Riccia
2. Anthocerotopsida (Hornworts)
E.g. Anthoceros
3. Bryopsida (Mosses)
E.g. Sphagnum, Polytrichum, Funaria
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Algae and Bryophyta show remarkable similarities with each other. Many characters are common in both Divisions. The main similarities are as follows......
1. Both are thalloid.
2. Both are simple and primitive.
3. In both groups, leaves, stem and roots are absent.
4. No xylem, no phloem.
5. Gametophytic phase is dominant phase in the life cycle of both.
6. Alternation of generation is also common.
There are many more similarities between both divisions. Please watch the complete video for better understanding.
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Bryophyta is a group of simple and primitive plants. It has following characters.
1. Simple and primitive plants
2. Found in moist and shady places. Therefore, Bryophyta is known as"Amphibians of Plant Kingdom"
3. Water is essential for fertilization.
4. No root, no stem, no leaves.
5. Xylum and phloem are absent.
6. Gametophytic plants.
7. Vegetative and sexual mode of reproduction.
8. Heterotrophic alternation of generations.
Examples......
Marchantia
Pellia
Riccia
Anthoceros
Mosses etc.
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Algae are economically very important. Some algae are useful while few are harmful as well.
1. As food
E.g. Porphyra, Ulva etc.
2. As fodder
e.g. Ficus, Laminaria, Sargassum etc.
3. Commercial products
e.g. Agar Agar, Charageenan, Alginate, Diatomite etc.
4. Research and Education
+Pathogenic Algae e.g. Cephaleuros (Red Rust of Tea disease)
+Corrosion (water supply pipes, marine vessels)
+Water bloom formation
+Production of Toxin (Microcystis)
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Algae can reproduce by vegetative, asexual and sexual methods. The gametophytic phase (n) is dominant phase in the life cycle of algae. It regularly alternates with the sporophytic phase (2n). Thus, true alternation of generations is found in the life cycle of algae.
The life cycle of algae may be of following types.
1. Haplontic type
2. Diplontic type
3. Haplodiplontic type
General life cycle of algae......
Mature plant(n) > Formation of Male Gamete + Female Gamete > Fertilization > Zygote(2n) Formation > Meiosis > Production of Meiospores > Germination of Meiospores > Development of mature plant(n).
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Who is the father of Biology?
जीव विज्ञान का जनक किसे कहा जाता है?
Who is father of Zoology?
जंतुविज्ञान का जनक?
Who is the father of Botany?
वनस्पति विज्ञान के जनक कौन है?
Who is the father of Genetics?
आनुवंशिकी के जनक किसे कहा जाता है?
इन सब को बस एक ही ट्रिक से याद करने के लिए इस वीडियो को देखे
इस ट्रिक के माध्यम से आप विटामिन ABCD की कमी से होने वाले रोगों के नाम आसानी से याद रख सकते हैं।
Trick : ABCD रात बड़ी सुन्द-री
Vitamin A = Night Blindness ( रात )
Vitamin B1 = Bery Bery ( बड़ी )
Vitamin C = Scurvy ( सु )
Vitamin D = Rickets (री )
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इसी तरह के और ट्रिक देखने के लिए नीचे दिए गये लिंक पर क्लिक करें
Algae are simple thalloid eukaryotic photoautotrophs. They can reproduce by vegetative, asexual and sexual methods.
Vegetative Reproduction in Algae
(With the help of vegetative parts)
1. Fragmentation
2. Budding
3.Fission
4. Tuber Formation
Asexual Reproduction in Algae
(With the help of spores)
1. Zoospores
2. Aplanospores
3. Endospores
4. Exospores
5. Autospores
Sexual Reproduction in Algae
(With the help of gametes)
1. Isogamy
2. Anisogamy
3. Oogamy
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General features of Algae
1. Unicellular or Multicellular
2. Simple
3. Thalloid
4. Mostly Aquatic
5. Gametophytic
6. Eukaryotic
7. Photoautotrophs.
Remember by this trick
Algae is a group of unicellular or multicellular simple thalloid eukaryotic oxigenic photoautotrophs. They can be classified into various classes on the basis of their body colour (Pigmentation). Red Algae, Green Algae, Yellow Algae, Golden Algae, Brown Algae etc. are different groups of algae.
In this video we have discussed all about the classification of algae. Main classes of division Phycota (Algae) are discussed in detail with beautiful diagrams, images and examples.
Very Helpful for NEET/AIIMS/BHU PMT/Intermediate etc.
Algae are simple, thalloid, oxygenic photoautotrophs. They are unicellular or multicellular eukaryotic organisms. Most of the algae are aquatic, living either in fresh water or in marine water.
In this video we have discussed about general features of algae.
In this video we have presented an easy and simple trick so that you can easily remember diseases caused by protozoa.
Click the link below
Mycorrhiza literally means Fungus Root. It is a symbiotic association between Fungi and Roots of higher plants.
In this association both partners are benefited. Mycorrhiza can be grouped in Ectomycorrhiza, Endomycorrhiza, VAM etc.
For more information watch the video.
Lichens are small plants consisting of permanent, self supporting, intimate association of Algae and Fungi. Crustose, Folioge and Fruticose Lichens are main types of Lichen. They play very important role in Ecological Succession.
Many Lichens are economically very important. Besides, they are also use as Bioindicator.
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Cyanobacteria are prokaryotic, oxygenic photoautotrophs. They are also called Blue Green Algae (BGA). e.g. Anabaena, Nostoc etc.
Topics Covered...
What is Cyanobacteria?
What is Blue Green Algae?
Features of BGA.
Structure of Cyanobacterial cell.
Anabaena.
Nostoc.
Heterocyst.
Akinete.
Nitrogen Fixation.
Nitrogenase Enzyme.
Biofertilizer.
Economic importance of cyanobacteria etc.
Watch video
Prions are misfolded proteins that are associated with several fatal neurodegenerative diseases in animals and humans.
It is not known what causes the normal prion protein to misfold; the abnormal 3D structure is suspected to confer infectious properties. The word prion derives from ‘proteinaceous infectious particle’. Prions composed of the prion protein (PrP) are hypothesized as the cause of transmissible spongiform encephalopathies(TSEs), including scrapie in sheep and bovine spongiform encephalopathy (BSE) in cattle—known popularly as "mad cow disease".
Viroids are subviral, submicroscopic low molecular weight covalently closed ssRNA. They are possibly smallest pathogens on Earth. They cause many diseases in plants like PSTVd, Cdang Cdang disease of coconut, tamato bunchy top disease etc. T.O. Diener first time discovered viroids while working on Potato Spindle Tuber Disease (PSTVd). To know more about Viroids, watch the video..............
परीक्षा में हम अपने अन्तरात्मा की आवाज सुनकर अधिक अंक प्राप्त कर सकते हैं। इसके लिए हमे अंतर्मुखी होना पड़ेगा। हमें अपने दिल की बात को सुनने आना चाहिए। इस लेक्चर में यही बताया गया है कि हम कैसे अपने मन की बात/दिल की बात/अंतरात्मा की आवाज/अवचेतन मन की आवाज सुनकर अधिक अंक ला सकते हैं। आप भी टोपर बन सकते हैं। इसके लिए पूरा वीडियो देखें और बताये गए निर्देशों का अनुसरण करें।
 |
| DOMAIN ARCHAEA |
What is the difference between bacteria and mycoplasma? Do you know? We have already discussed about bacteria and mycoplasma in detail in earlier lecturers. Here we will try to differentiate bacteria from mycoplasma. There are many differences between bacteria and mycoplasma. Let's find out.....
Mycoplasma is a prokaryotic, cell wall lacking microorganism. It is very important since it causes many diseases in humans like Pneumonia, Urinogenital tract infection etc. Watch full video for better understanding about mycoplasma.
अगर आप कम समय में ज्यादा सीखना, समझना और याद करना चाहते हैं तो यह वीडियो शुरू से अंत तक देखे। महान वैज्ञानिक रिचर्ड फाइनमैन की इस विधि से आप अपने भूलने की समस्या से निजाद पा सकते हैं।
100% scientifically proved technique to learn, remember, retain and explain anything you want. Feynman Technique will cut your study time, boost your memory and ultimately increase your chance of success. Let's try it................
In this video we will learn to differentiate bacteria from viruses.
Click the link below
Why are viruses called Bioterrorist?
How are Viruses used as Bio-bomb and Bio Weapons?
Watch the video to get answer.
Topics covered: Viral diseases in man.
Ebola.
Zika.
HIV AIDS.
Nipah
Influenza
Mums
Measles
Rota
Rabbies
Polio
Small pox
Herpes
Common cold
Encephalitis
Dengue
Chikungunya
Yellow fever
Etc.
NEET/AIIMS/Intermediate Biology.
Topics covered : How are viruses multiply?
Replication in viruses.
Multiplication in viruses.
NEET/AIIMS/Intermediate Biology.
Topics covered: Classification of viruses.
Types of viruses.
Plant viruses.
Animal viruses.
Human viruses.
Bacterial viruses.
Classification of viruses on the basis of Genetic Material.
RNA viruses.
DNA viruses.
Biology for NEET/AIIMS
Course Name : NEET Biology Full Course
Topics covered : What is virus.
Living characters of viruses.
Non living characters of viruses.
Why are viruses called connecting link between living and non living.
Topics covered | Bacterial diseases in humans.
Name of diseases, causal agents, symptoms, prophylaxis, diagnosis and treatment.
1. Tuberculosis
2. Cholera
3. Leprosy
4. Salmonellosis/Typhoid
5. Diphtheria
6. Pertussis
7. Bacterial Food Poisoning
8. Gonorrhoea
9. Syphilis
10. Tetanus
11. ???
This lecture covers following topics
What is Gram Staining.
Requirements for G staining.
Procedure of Gram staining.
Difference between G (+)ve bacteria and G (-)ve bacteria.
Examples of G (+)ve bacteria and G (-)ve bacteria.
Course Name : NEET Biology Full Course
Course Name : NEET Biology Full Course
https://www.youtube.com/playlist?list=PL6C8x7cxpLbnq95yr7HETJbitjCxRQwPb
Lecture: Characteristics of bacteria
Topics covered : what is bacteria.
Salient features of bacteria.
Types of bacteria.
Mode of nutrition in bacteria
Course Name : NEET Biology Full Course
https://www.youtube.com/playlist?list=PL6C8x7cxpLbnq95yr7HETJbitjCxRQwPb
Lecture : Three Domains of Life
Topics covered : Basis of three domains of life.
Carl Woese.
Archaea.
Prokarya.
Eukarya
Course Name : NEET Biology Full Course
https://www.youtube.com/playlist?list=PL6C8x7cxpLbnq95yr7HETJbitjCxRQwPb
Lecture : Kingdom Animalia (Bilingual Hindi&English)
(With diagrams, images and animations)
Topics covered : Characteristics of Animals.
Structure of animal cell.
Other basic knowledge of kingdom animalia.
Course Name : NEET Biology Full Course
Topics Covered : Characteristics of plants.
Diagrammatic explanation of plant cell.
Life cycle of plant.
Alternation of Generation in plants.
Biology for NEET/AIIMS/Intermediate
Lecture : Economic importance of Fungi.
कवकों का आर्थिक महत्व
लाभदायक और हानिकारक कवक
Useful and Harmful Fungi.
Kingdom Fungi ( Part 2 ) : Classification of Fungi | कवकों का वर्गीकरण । Biology for NEET
Topics covered : Phycomycetes
Ascomycetes.
Basidiomycetes.
Deuteromycetes.
Playlist Name - NEET Biology Full Course
Lecture : Kingdom Fungi (Part 1)
Topics covered : Characters, structure and life cycle of fungi.
https://www.youtube.com/playlist?list=PL6C8x7cxpLbnq95yr7HETJbitjCxRQwPb
व्हाइटबोर्ड पर एनीमेशन, इमेज और डायग्राम के द्वारा निर्मित बायोलॉजी की नये और सम्पूर्ण कोर्स को देखने के लिए ऊपर दिए गए लिंक पर जाये। यकीन मानिए आपको पसंद आएगी।
Biology for NEET/AIIMS/Intermediate
Topics covered : Salient features of kingdom protista.
Example of protists : Chrysophytes, Dinoflagellates, Slime moulds, Euglenophytes, Protozoans.
