Cultivation of Microgreens during December 2019

 

Mushroom cultivation during the month of February 2019

 

                                                HAPPY NEW YEAR 2021

  

OUTSTANDING WOMAN IN SCIENCE - AWARD FROM VENUS INTERNATIONAL FOUNDATION.

DR.S.CATHARIN SARA- RECEIVING AWARD 

                        OUTSTANDING WOMEN IN SCIENCE

                           FROM VENUS INTERNATIONAL FOUNDATION

Here is the time table for UG and PG STUDENTS OF BOTANY
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I B.Sc Diatoms notes

2. Sexual Reproduction:

The pattern of sexual reproduction differs in both orders — Pennales and Centrales. During this process, auxospore is formed in both the groups. During cell division, those cells become reduced in size, are able to regain their normal size through the formation of auxospore, so it is a “restorative process” rather than multiplication.

Auxospore Formation in Pennales:

It takes place through gametic union, auto­gamy and parthenogenesis.

These are of the following types:

1. Production of one auxospores by two conjugating cells. In this process two uniting cells come very close to each other (Fig. 3.103) and become covered by a mucilaginous sheath. The diploid nucleus of each cell undergoes meiosis.

Out of four nuclei, three degenerate and only one survives. The surviving nucleus behaves as gamete (n). The gametes come out from the parent frustules and unite together, to form a zygote (2n).

After a short period of rest the zygote elongates considerably and functions as an aux­ospore. The auxospore projects out from the par­ent frustules along with mucilage and elongates in a plane parallel to the long axis of the parent diatom.

The auxospore is enclosed in a pectic membrane, the perizonium. The auxospore then develops new frustule inside the perizonium. Thus new diatom cell is formed which regains the normal size. It is found in Cocconis placen­tula, Surirella saxonica etc.

2. Production of Two Auxospores by Two Conjugating Cells:

This is a very common process of auxospore formation. In this process the conju­gating cells come very close to each other and get enclosed by mucilage (Fig. 3.104). The nucleus (2n) of each cell undergoes meiotic division and forms four nuclei.

Out of four nuclei, two degene­rate, the rest two survive. The cytoplasm then divides either equally or unequally and along with one nucleus they behave as gametes. Thus two gametes are formed in each cell.

               

HOLY CROSS COLLEGE(AUTONOMOUS) – TRICHY -2

MAJOR CORE -1 PLANT DIVERSITY - 1

  I.B.Sc botany seminar topics (2019-20 batch)

                                      SEMINAR TOPICS

1.     Abinaya.M     -   Structure and reproduction of  Caulerpa

2.     Aboorva.K  -   Life cycle  pattern of Caulerpa

3.     Almubin.B -  Structure and reproduction of Diatom (Pinnularia virdis)

4.     Amala Oviya. A – Life cycle pattern of Diatam

5.     Deepa.M -  Structure and reproduction of Dictyota

6.     Deepana.E – Life cycle  pattern of  Dictyota

7.     Delsi Mathew – Structure and reproduction of Polysiphonia

8.     Dharshinin.R – Life cycle pattern of Polysiphonia

9.     Divani.A -  Techniques in spirulina cultivation

10.  Divya.D – Economic importance of algae

11. Divya.S. – Outline classification of Fungi.(Ainsworth 1971)

12. Divyadharshini.G – Salient features of  Phycomycetes

13. Femila Anugraga.V – Salient features of Ascomycetes

14. Glory Reshma.S. – Salient features of  Basidiomycetes

15. Gracy Angel.S. – Salient features of  Deuteromycetes

16. Haripriya.B. – Salient features of  Phycomycetes

17. Helan Stanila.A –Morphology and reproduction of Albugo

18. Iswarya.P – Morphology and reproduction of Saccharomyces

19. Janani.K – Morphology and reproduction of Penicillium

20. Janani.P – Life cycle pattern of Caulerpa

21. Jasmine.J- Life cycle pattern of Diatom

22. Jovit suguna.G.- Life cycle patterns ofDictyota

23. Karpagavalli.K – Life cycle pattern of Polysiphonia

24. Kaviya.A. – Structure and reproduction of Diatom.

    Dr.S.Catharin sara

HOLY CROSS COLLEGE(AUTONOMOUS) – TRICHY -2

MAJOR CORE -1 PLANT DIVERSITY - 1

   I.B.Sc botany assignment topics (2019-20 batch)

                                      ASSIGNMENT  TOPICS

1.     Rasika      -   Structure and reproduction of  Caulerpa

2.     Sagaya Rani.L -   Life cycle  pattern of Caulerpa

3.     Sakthi Priya.S -  Structure and reproduction of Diatom (Pinnularia virdis)

4.     Sangeetha Preethi  – Life cycle pattern of Diatam

5.     Santhiya.R.-  Structure and reproduction of Dictyota

6.     Sehanaz.G – Life cycle  pattern of  Dictyota

7.     Selva mathi.M – Structure and reproduction of Polysiphonia

8.     Sherin Silviya.J – Life cycle pattern of Polysiphonia

9.     Sherina Christy.A -  Techniques in spirulina cultivation

10.  Sneha.D – Economic importance of algae

11. Sneha.B. – Outline classification of Fungi.(Ainsworth 1971)

12. Soshina Iswarya.G – Salient features of Phycomycetes

13. Sowndharya.M – Salient features of Ascomycetes

14. Srividhya.K. – Salient features of  Basidiomycetes

15. Subathra.S – Salient features of  Deuteromycetes

16. Suganthi.M. – Salient features of  Phycomycetes

17. Sulochana.M –Morphology and reproduction of Albugo

18. Sweety Reshma.R – Morphology and reproduction of Saccharomyces

19. Subhiksha.T.S. – Morphology and reproduction of Penicillium

20. Udhaya.S – Life cycle pattern of Caulerpa

21. Umarsalma.F- Life cycle pattern of Diatom

22. Vijaya shanthi.P.- Life cycle patterns ofDictyota

23. Vinothini.R – Life cycle pattern of Polysiphonia

24. Yasmeen Banu.S. – Structure and reproduction of Diatom.

1.      Dr.S.Catharin sara