Class XI

System of classification was invented by a Swedish naturalist
  1. Carolus Linnaeus
  2. Charles Linnaeus
  3. Charles Carnegie
  4. Joan-Baptista van Helmont
External agencies are not required in
  1. natural vegetative propagation
  2. sexual reproduction
  3. bisexual reproduction
  4. trisexual reproduction
 Photolysis of six water molecules results in
  1. 6 atoms of hydrogen
  2. 12 atoms of hydrogen
  3. 24 atoms of hydrogen
  4. 18 atoms of hydrogen
 As soon as seeds are shed, it is essential that before seed germination,
  1. Seeds must be soaked in water
  2. Seeds must be shed at proper place
  3. Seeds have undergone a dormant period
  4. Seeds are non-viable
If a cell with 20 chromosomes undergoes mitosis, each daughter cells has
  1. 10 chromosomes
  2. 20 chromosomes
  3. 30 chromosomes
  4. 46 chromosomes
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