I bob. Magnoliyatoifa (Magnoliophyta). Gulli yoki yopiq urug`li o`simliklar



Download 2.25 Mb.
Page2/13
Date09.05.2022
Size2.25 Mb.
#58711
1   2   3   4   5   6   7   8   9   ...   13
attachment
Mavzuvning dolzaribligi. O`simliklar tabiatda va inson hayotidagi ahamiyatini o`rganish, sayyoramizni turli tabiiy ofatlardan asrash, atmasferani tozaligini saqlash, tuproq unumdorligini oshirishda, daryo va ko`llarni gidrologik rejimini tartibga solib turish kabilar.

Mavzuning asosiy maqsadi. Atirgulkabilar sinfchasi (ra`nodoshlar oilasi) ga tegishli bo`lgan tur va turkumlarni inson va tabiatdagi ahamiyatini o`rganish. Bu oila vakillarrini qanday muhit sharoitlarda o`sishi, dorivorlik va zaharli vakillarini ko`payishi hamda marfalogiyasini o`rganish.


Download 2.25 Mb.

Share with your friends:
1   2   3   4   5   6   7   8   9   ...   13



The database is protected by copyright ©ininet.org 2024
send message
    Main page
Guide
Instructions
Report
Request
Review