Class IX

In dim light, circular muscles
  1. contract
  2. relax
  3. relax
  4. inactivate
Bacteria grow and multiply rapidly in
  1. aerobic environment
  2. anaerobic environment
  3. water
  4. soil
Depending upon how long a plant lives, division can be
  1. Depending upon how long a plant lives, division can be
  2. Depending upon how long a plant lives, division can be
  3. based on perennials or biennials
  4. all of these
Hair are produced by
  1. epidermis
  2. dermis
  3. malphigian layer
  4. granular layer
Starch (C6H10O5)n is broken down to form glucose (C6H12O6) units when hydrolyzed by
  1. alkaline base
  2. acidic base
  3. neutral base
  4. salty base
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