Class XI

 If organism of one trophic level is parasite, the
  1. Pyramid number gets higher
  2. Pyramid number gets inverted
  3. Pyramid of number gets lower
  4. Pyramid of number gets infected
Upon soaking, testa
  1. Sheds itself
  2. Becomes swollen
  3. Becomes permeable for gaseous exchange
  4. Becomes hard
Nerves transfer nerve impulses to
  1. Central nervous system
  2. Peripheral nervous system
  3. Spinal nerves
  4. Sense organs
Mature sieve tube cell
  1. Looses its central nucleus
  2. Looses its central vacuoles
  3. Cell walls become fully permeable
  4. Cell wall becomes impermeable
When brain is viewed from above in man, visible part of brain is
  1. Medulla oblongata
  2. Cerebral hemisphere
  3. Erebellum
  4. Pituitary gland
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