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The latest Messages

2022-05-12 18:47:15 https://bit.ly/3w4HSev
https://bit.ly/3w4HSev

230 views15:47

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2022-05-12 03:26:24 IMP OF PLANT KINGDOM

Isogamous sexual reproduction in algae- Ulothrix (flagellated)
Spirogyra (non-flagellated)

Anisogamous sexual reproduction in algae- Udorina

Oogamous sexual reproduction in algae- Volvox, Fucus

Algin- Brown Algae

Carragreen - Red Algae

Agar- Gelidium, Gracilaria
(Red algae)

Motile asexual spores in algae- Zoospores

Laminarin, Mannitol- Complex carbohydrates of Brown algae

Fucoxanthin- Brown Algae

Phycoerythrin- Red Algae

Floridean Starch Found in Red algae, similar to amylopectin and glycogen

The main plant body is a gametophyte- Bryophytes

Peat- Sphagnum

Microphylls- Selaginella

Macrophylls- Fern

354 views00:26

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2022-05-11 11:50:04 ┊✯ ❥˙ ｡..... NCERT

Structure of myofibril :-

>Each myofibril consist of alternate dark and light band.

>Dark band - contain myosin protien and is called A-band or Anisotroic band.

>Light band - Contain actin protien and is called I Band or Isotropic band.

>I Band is bisected by an elastic fiber called ‘Z’ line. Actin filament (thin flament) are firmly attached to the ‘Z’ lines.

>Myosin filament (thick filament) in the ‘A’ Band are also held together in the middle of ‘I’ Band by thin fibrous membrane called ‘M’ line.

>The portion between two successive ‘Z’ lines is considered as functional unit of contraction and is called a sarcomere.

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439 views08:50

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