Fill in the blanks:
H. The integuments of ovule surround the ……… all around except at the apex, leaving a narrow passage , called the ………..

Fill inthe blanks: Changes in our surroundings that make us respond to them are called............. .

Fill up the blank Changes in our surroundings that make us respond to them, are called_______

Fill in the blanks: Ovulation is induced by a hormone called………..

Fill in the blanks: The leaves have microscopic openings called_______.

Fill in the blanks: Area where optic nerve leaves the eye is called the…………………

Fill in the blanks with suitable words. Then give reasons why the words are suitable. Area where optic nerve leaves the eye is called the ………………