1-laboratoriya ishi: Pichan tayoqchasi bakteriyasi va ko‘k-yashil suvo‘tlarini mikroskopda ko‘rish

Sana:__________________


8-LABORATORIYA MASHG‘ULOTI.
Mavzu: Tol, shaftoli, olma, ligustrum bargidagi o‘zgaruvchanlikni variatsion qator va egri chiziq va belgining o‘rtacha ko‘rsatkichini statistika usulda aniqlash.


Maqsad:O‘quvchilardagi modifikatsion o‘zgaruvchanlik qoununiyatlari haqidagi bilimlarni mustahkamlash.
Jihozlar:100 tadan tol, gilos, olcha, olma va ligustrumlarning gerbariy qilingan barglari, chizg‘ich.
Ishni bajarish tartibi:
1. O‘quvchilar 5 guruhga boiinadi.
2. Bir guruhga olma, ikkinchi guruhga gilos, uchinchi guruhga olcha, to‘rtinchi guruhga tol, beshinchi guruhga ligustrumning 100 tadan quritilgan barglari tarqatiladi.
3. Har bir guruh o‘quvchilari o‘ziga berilgan barglarni oichab ularning uzunligini daftarga yozib boradi.
4. O‘lchangan barglarning eng kichik va katta ko‘rsatkichlari aniqlanadi va variatsion qator tuziladi.
5. Har bir variatsion qator guruhida variantlarning takrorlanishi aniqlanadfo‘rganilayotgan o‘simlik barglarining o‘rtacha qiymati aniqlanadi. Buning uchun quyidagi formuladan foydalaniladi

M - o‘rtacha qiymat, V - variant, P - variantlarning takrorlanishi (o‘lchangan barglarning umumiy soni) Z - jamlash belgisi, n - variantlarning umumiy yig‘indisi (o‘lchangan barglarning umumiy soni).
Mashg’ulot natijalari va yakuniy xulosalar. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________