Class IX

Lactose (C12H22O11) can by hydrolyzed in glucose (C6H12O6) and galactose (C6H12O6) in presence of enzyme
  1. lactase
  2. maltase
  3. sucrose
  4. lipases
. Hair cover is no longer an efficient insulator in
  1. strong winds
  2. water
  3. arctic pole
  4. Alaska
Organs producing reproductive cells are called as
  1. gametes
  2. gonads
  3. globules
  4. glands
Nectar at base of androecium can be reached
  1. by any insect
  2. can cling to wings or feathers of visiting birds and insects
  3. can be sucked only by insects with a long proboscis
  4. by mosquitoes only
In Hibiscus and Clitoria, ovary is
  1. inferior
  2. superior
  3. both A and B
  4. posterior
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