A creeper entwines a tree all around. A blind thing cannot see its way. Therefore it is evident that trees have vision.
वल्ली वेश्यते वृक्षं सर्वतश्चैव गच्छति। न ह्यदृष्टेश्च मार्गोऽस्ति तस्मात् पश्यन्ति पादपाः॥