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2023-01-06 11:54:15 ALGAE

■ chlorophyll-bearing, simple, thalloid, autotrophic and largely aquatic

■habitats: moist stones, soils and wood

■occur in association with
• fungi – lichen
• animals – sloth bear

︎ form and size- highly variable

︎Vegetative reproduction - fragmentation.

︎Asexual reproduction - different types of spores, common – zoospores

︎ Sexual reproduction - fusion of two gametes.

︎ half of the total carbon dioxide fixation on earth is carried by algae

︎increase the level of dissolved oxygen in their immediate environment

︎ paramount importance as primary producers of energy-rich compounds

FORM AND SIZE

★ unicellular - Chlamydomonas
★ colonial form – Volvox
★ filamentous - Ulothrix and Spirogyra.
★ massive plant bodies – kelps


TYPE OF GAMETE

● isogamous flagellated and similar in size

●non-flagellated and similar in size – Spirogyra

■ anisogamous
gametes dissimilar in size

■ oogamous – Volvox, Fucus


USEFUL TO MANKIND

● Porphyra, Laminaria and Sargassum and 70 species of marine algae are used as food.

● algin (brown algae) and carrageen (red algae) produce large amounts of hydrocolloids

●Gelidium and Gracilaria are used to grow microbes and in preparations of ice-creams and jellies

● Chlorella rich in proteins is used as food supplement even by space travellers

ओपन / कमेंट

2023-01-06 05:36:11 Tips for revision before Test

Firstly in the morning Make a table of chapters you have to revise according to subjects
Allot difficult subject chapters more time to revise than the subject you are well versed.
Try to memorize by revising your notes and NCERT
Try recalling technique what ever you revise i.e. recall whatever you have revised after 7/8 hours in your mind.
The chapters you revise make it as strong as you could not loose any marks from it.
Don't take stress but manage your time wisely

All the best , KEEP STUDYING ओपन / कमेंट

2023-01-05 17:58:36 Important Scientists & their theories frm Molecular Basis

1) Fredrick Griffith (1928) - Transformation Principle

2)Avery,Mcleoid &Maclarty (1933-44) - Neither Protein Nor Rna its Dna

3)Harshy Chase(1952) - Bacteriophage exp

4)Maselson &Sthal -Semi cons model of rep(prokaryotes)

5)Taylor -Vicia Fabea Plant (Eukaryotes)

6)Willkins - X ray Crystallography

7)Rosen & Franklin -Helical st of Dna

8)Watson & Crick(1953) -Double helical Dna

9)Crick - Central Dogma

10)Benzer - Benzer Model of Dna (Cistron,Recon ,Muton)

11) Jacob & Monad (1961) - Lac Operon

12)Nirenberg & Khorana - cracking of genetic code

13)Nirenberg - Dicephering Of Codon

14)Hugo De Varies - Mutation Theory

15)Holley - Clover leaf Model

16)Gammow - Codon Is Triplet


Join us for more

ओपन / कमेंट

2023-01-04 15:18:07

ओपन / कमेंट

2023-01-04 08:18:42 Amino Acid Chart

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2023-01-03 11:14:35 𝙎𝙏𝙍𝙐𝘾𝙏𝙐𝙍𝘼𝙇 𝙊𝙍𝙂𝘼𝙉𝙄𝙎𝘼𝙏𝙄𝙊𝙉 𝙄𝙉 𝘼𝙉𝙄𝙈𝘼𝙇𝙎

𖣔𝓣𝓻𝓲𝓬𝓴𝓼 𝓽𝓸 𝓻𝓮𝓶𝓮𝓶𝓫𝓮𝓻 𝓮𝓹𝓲𝓽𝓱𝓮𝓵𝓲𝓾𝓶 𝓽𝓲𝓼𝓼𝓾𝓮 𝓵𝓸𝓬𝓪𝓽𝓮𝓭 𝓲𝓷 𝔂𝓸𝓾𝓻𝓮 𝓫𝓸𝓭𝔂

1. Simple Squamous: 𝘽𝙇𝙀𝙈
B - Bowmans Capsule
L- Lung Alveoli
E- Endothelium
M - Mesothelium


2. Simple Cuboidal: 𝙍𝙊𝙏
R- Renal tubules
O -Outer Enamel Epithelium
T- Thyroid Follicles


3. Simple Columnar: 𝘽𝙄𝙂 𝙎𝙄𝙍
B - Brain
I - Intestines
G- Gall Bladder
S- Stomach
I - Inner Enamel Epithelium
R - Resp Tract


4. Pseudostratified Columnar : 𝙋𝙡𝙨 𝙙𝙤𝙉𝙉𝙏 𝘽 𝙤𝙤𝙯𝙚
P - Paranasal Sinus
N- Nasal Cavity
N- Nasopharynx
T-Trachea
B- Bronchi

ओपन / कमेंट

2023-01-01 06:11:46 ओपन / कमेंट

2022-12-31 23:13:13 Hope the New Year starts off bright, and continues to shine throughout the year. Wishes for you of peace and contentment that do not cease. Happy New Year To You!
Wishing all my NEET Aspirants a Happy New Year with more motiv.ation and courage to all my NEET wale bacchon ओपन / कमेंट

2022-12-30 16:16:51 Hello kids,
Lets finish Plant Kingdom

Do join at 7pm Salman sir is waiting for you

https://www.youtube.com/live/ezewkgGGRbk?feature=share ओपन / कमेंट

2022-12-30 15:31:31

ओपन / कमेंट