Class X

Numerous small branches which end blindly in body of planarian are called
  1. Septum
  2. Caecae
  3. Mouth
  4. Pharynx
Osmoregulators excrete salts through
  1. Fins
  2. Gills
  3. Bladder
  4. Scales
Amniotic sac is filled with fluid for
  1. Protection
  2. Shock absorption
  3. Nutrition
  4. Both A and B
Conducting tissues which help in transportation are
  1. Xylem
  2. Phloem
  3. Both A and B
  4. Roots and phleom
Notochord is one of few prominent structural features in chick embryo of about
  1. 15 hours
  2. 18 hours
  3. 13 hours
  4. 10 hours
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