Paudhe Kaise Badhte?
Class 7 Science · Chapter 10: Paudhon mein Jeevan Prakriyaayein · NCERT Curiosity section 10.1
Seekho
Kabir ki daadi ke tamaatar ke paudhe mein nayi pattiyan aur shaakhaayein aayi, tana mota hua. "Hum ise kabhi khilaate nahi," Kabir kehta. "Shaayad mitti khaata," Neel andaaza lagaata. "Mujhe lagta paani madad karta," Zoya kehti. "Aur dhoop!" Meher jodti. Wo apne vichaar jaanchne ka faisla karte.
Wo teen ek jaise mirch ke paudhe lagaate: Gamla A dhoop mein paani ke saath, Gamla B dhoop mein bina paani, Gamla C andhere mein paani ke saath. Do hafte baad A lamba-hara, C patla-peela, aur B murjha gaya. Paudhon ko badhne ke liye dhoop aur paani dono chahiye. Paudhon ki dekhbhaal par ek puraana Bharatiya granth, Vrikshayurveda, bhi kehta ki ped sirf lagaane se phal nahi dete: dekhbhaal, achchhi mitti aur khaad chahiye.
Explore: paudhon ko kya chahiye?
- Har gamla dekhkar sort karo.
Yaad rakho
- Paudhe pattiyan, shaakhaayein, lambaai aur tane ki motaai badhaakar badhte.
- Teen gamlon ka nishpaksh test dikhaata paudhon ko dhoop aur paani dono chahiye.
Quick check
Andhere mein roz paani wala paudha kaisa badhta?
- thin and pale yellow
- tall and dark green
- faster than in sunlight
- exactly the same
Answer
thin and pale yellow. Dhoop ke bina wo kaafi khaana nahi bana sakta.
Socho
Teeno gamlon mein ek si mitti aur ek jaise paudhe kyun zaroori?
Ek answer
Taaki sirf ek cheez (roshni ya paani) alag ho; tab badhat ka koi bhi fark usi ek cheez se joda ja sake.
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.