Which one of the following is mainly concerned with motor signalling?

1. Hypothalamus
2. Spinal cord
3. Thalamus
4. Pons

Which of the following hormones promotes lateral bud development in dicots?

1. Auxin
2. Cytokinin
3. Gibberellins
4. Ethylene

Which part of the brain mainly controls body temperature?

1. Thalamus
2. Hypothalamus
3. Cerebrum
4. Cerebellum

Leaf fall can be induced by

1. cytokinins
2. auxin
3. abscisic acid
4. ethylene