Class X

Which body organ is surrounded by meninges
  1. Brain and Spinal cord
  2. Brain and Heart
  3. Spinal Cord and Lungs
  4. Heart and Lungs
The gap between two neurons is called _____
  1. Synapse
  2. Axon
  3. Synthesise
  4. Dendron
The plant hormone which is essential for cell division is:
  1. Auxin
  2. Cytokinin
  3. Ethylene
  4. Gibberellin
The direction of impulse in a typical neuron is
  1. Axon to dendron
  2. Dendron to axon
  3. Both (a) and (b)
  4. None of these
Tropic movements are
  1. in response to light
  2. in response to gravity
  3. non-directional
  4. unidirectional
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