10. 'Birds have eggs,' said Dora, 'plants have seeds.'
'Well, it is all the same thing,' said Harry.
'I think the green thing with a horn is only a case to take care of the seed.'
11. 'All these things seem to take care of each other. First, the green leaves at the back take care of the yellow cup.'
'And the yellow cup takes care of the yellow threads.'
'And the yellow threads take care of the green cases.'
'And the green cases take care of the seeds.'
