Paudhon mein Parivahan
Class 7 Science · Chapter 10: Paudhon mein Jeevan Prakriyaayein · NCERT Curiosity section 10.3
Seekho
Jadein mitti se paani aur khanij leti. Ye upar kaise pahunchte? Zoya do safed phool wali tahniyan paani mein khadi karti, ek saade aur ek laal syaahi wale mein, tane paani ke andar kaatkar. Agle din doosri tahni ki nason, pattiyon aur pankhudiyon mein laal dhaariyan; kate tane mein andar laal bindu.
Paani aur ghule khanij jad, tane, shaakha aur patti ki patli naliyon, xylem, se upar chadhte. Pattiyon mein bana khaana doosri naliyon, phloem, se paudhe ke har hisse tak jaata, jadon aur badhte phalon samet. Zyaada khaana jadon, tanon aur beejon mein jama, jaise aaloo, gaajar aur anaaj.
Explore: xylem ya phloem?
- Har kaam sort karo.
Yaad rakho
- Xylem jadon se paani aur khanij upar le jaata.
- Phloem pattiyon se khaana sab hisson tak; khaana jad, tane aur beejon mein jama.
Quick check
Laal syaahi ke paani mein safed phool gulaabi. Kaunsi naliyon ne syaahi le jaayi?
- xylem
- phloem
- stomata
- alveoli
Answer
xylem. Xylem paani aur ghule padaarth upar le jaata.
Socho
Rangeen paani mein rakhne se pehle tana paani ke andar kyun kaatte?
Ek answer
Taaki kati naliyon mein hawa ka bulbula na jaaye aur xylem mein paani ka bahaav na roke.
Practice
Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.