1 medula oblangata

2 shoots show positive photo tropism

3 a pituitary gland

b photo tropism

5 a cerebellum

b hypothalamus

c thalamus

d cerebrum

6 a stimulus of touch

b point where stimulus is received

7 a) the nerve pathway involved in a reflex action, including at its SIMPLEST a sensory nerve and a motor nerve with a synapse between.

b) auxins - delay aging

gibberlins - induce parthenocarpism

cytokinins - cell division

ethylene - promote aging

8 absisic acid

9 moves towards point of stimulus

10 a) insulin

b) cortisone

c) SEX corticoids

d) groth hormone

12 a) adrenaline production promotes flow of blood to muscles and reduce flow of blood to stomach and intestines

b) because hyper secretion may cause acromagaly in adults and gigantism

14) the movement of plant to stimuli of gravity

types positive and negative geotropism

15) synapse is the gap between two NEURONS . the impulses are PASSED through polarisation and repolarisation

16) when the sugar level in blood DECREASES the insulin production is reduced due to the negative feed back mechanism

17) adrenaline produced by adrenal gland

18) medula oblangata - controls muscular coordination

hypothalamus and thalamus - controls body temp and pressure

19) root

20) shoot show positive phototropism and root shows negative phototropism

I NEARLY SPENT 20 MINS TO ANSWER SO DONT TELL ME IT IS WRONG!!!!!!!!!