पौधों में स्थायी ऊतक (Permanent tissue) को उसमें मौजूद कोशिकाओं के प्रकार के आधार पर किन दो मुख्य प्रकारों में वर्गीकृत किया गया है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?