Ripening of fruits, such as bananas, is hastened by
  • Gibberellins
  • Hydrotropism
  • Phototropism
  • None of these
Dwarfism results due to
  • Excess secretion of growth hormone
  • Less secretion of adrenaline
  • Less secretion of growth hormone
  • Excess secretion of thyroxin
Select the mis-matched pair
  • Adrenaline : Pituitary gland
  • Testosterone: Testes
  • Estrogen : Ovary
  • Thyroxin : Thyroid gland
Which of the following is not an involuntary action?
  • Vomiting
  • Salivation
  • Chewing
  • Heart beat
The hormone which increases the fertility in males is called
  • testosterone
  • oestrogen
  • insulin
  • growth hormone
The gap between two neurons is called a
  • Impulse
  • Dendrite
  • Synapse
  • Axon
Which of the following endocrine glands is unpaired?
  • Pituitary
  • Ovary
  • Testes
  • Adrenal
The movement of sunflower in accordance with the path of sun is due to
  • hydrotropism
  • geotropism
  • chemotropism
  • phototropism
Which part of the brain coordinates a reflex action?
  • Spinal Cord
  • Cerebellum
  • Cerebrum
  • None of these
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