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(i) This is vegetative reproduction, where new plants grow from underground parts like tubers, rhizomes, or bulbs. Example: Potato grows from tubers. (ii) Advantages: fast multiplication, true-to-type plants. Disadvantages: diseases spread easily, no genetic variation. (iii) Offsprings show little variation because they ...
Haemodialysis removes wastes and excess water from blood when kidneys fail. Blood passes through a dialysis machine with a semipermeable membrane. Limitations: temporary, cannot replace all kidney functions. Precautions: follow fluid restrictions and maintain hygiene to prevent infections. CBSE Sample Paper ...
The correct answer is [C] Lead storage battery manufacturing factories near A and soaps and detergents factories near B.Lead storage batteries release acidic waste, making river A acidic. Soaps and detergents factories release basic waste, making river B basic ...
The correct answer is [A] Oestrogen.Oestrogen is the female sex hormone secreted by ovaries. It regulates the menstrual cycle and prepares the uterus for pregnancy. Lack of oestrogen causes irregularity, so doctors prescribe hormonal tablets to balance it. class 10 ...
The correct answer is [A] Fore brain.The forebrain is the thinking part of the brain. It controls reasoning, intelligence, memory, emotions, and voluntary actions, making it responsible for higher cognitive functions in human beings. class 10 science sample paper 2026 CBSE ...
