Class X

Amphibians are poikilothermix, therefore they use to hibernate in
  1. Winter
  2. Summer
  3. Autumn
  4. Spring
Production of leaves and flowers is due to
  1. Lateral meristems
  2. Intercalary meristems
  3. Apical meristems
  4. Cortex
 Embryo of Taenia is inside egg and contain chitinous hook that are in number
  1. 6
  2. 7
  3. 5
  4. 9
An internal factor that influences growth in plants is
  1. Hormones
  2. Water
  3. Nutrition
  4. All of above
Heart of an amphibian has three chambers i.e.
  1. 2 ventricles and 1 auricle
  2. 2 auricles and 1 ventricle
  3. 3 ventriles and no auricle
  4. 3 auricles and no ventricle
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