Photosynthesis in Higher Plants
Photosynthesis
Photosynthesis wo tarika hai jisse green plant light use karke carbon dioxide aur water ko sugar me badalta hai, oxygen release karke. Yahi process lagbhag saari life ko feed karta hai.
Ye chloroplast me do stages me hota hai. Light reactions sunlight capture karke energy carriers (ATP aur NADPH) banati hain, water tod kar oxygen release karti hain. Dark reactions (Calvin cycle) phir us energy se carbon dioxide se sugar banati hain.
Light sirf pehli stage ke liye chahiye. Doosri stage bina light ke chal sakti hai jab tak ATP aur NADPH available hon, isliye ise light-independent kehte hain, 'raat me hota hai' nahi.
Yahaan students galti karte hain
'Dark reactions' ko andhera nahi chahiye, unhe light reactions ke products chahiye. Students 'dark' padh kar sochte hain ye raat me chalti hain. Ye tab chalti hain jab ATP aur NADPH milte hain, aksar din me. Ye light-independent hai, night-time nahi.
Yaad rakho
Light energy banati hai; Calvin cycle use kharch karke sugar banati hai.
Exam me kaise kaam aata hai: do stages, har ek kahaan hoti hai, aur light-independent trap baar-baar poochhe jaate hain.
Ye kahaan jud'ta hai
Photosynthesis energy sugar me store karti hai; respiration us sugar ko wapas energy ke liye jalati hai. Ye lagbhag mirror images hain, aur jo oxygen ek release karti hai wahi doosri consume karti hai.
Ulta process: respiration →Ek quick check
Photosynthesis ke dauraan release hone wali oxygen kahaan se aati hai:
- ACarbon dioxide
- BWater
- CSugar
- DChloroplast membrane