Class IX

Plasma membrane is
  1. permeable
  2. semi-permeable
  3. impermeable
  4. stronger than cell wall
Fruit chambers are also known as
  1. loculus
  2. glumes
  3. bracts
  4. globules
Hollow space between xylem is called
  1. vessel
  2. lumen
  3. lignin
  4. pits
Collecting tubules transport waste materials into the
  1. renal pelvis
  2. ureter
  3. hilus
  4. medulla
Endosperm nucleus is formed when
  1. male gamete fuses with ovum
  2. male gamete fuses with definitive nucleus
  3. male gamete enter microphyll
  4. male gamete is formed from generative nucleus
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