Class XII

Non-motile spores produced exogenously by constriction at the tips of special hyphae are called as
  1. Basidiophors
  2. Synzoospores
  3. Archaeocytes
  4. Conidiophores
Parrots have life span of about
  1. 15 years
  2. 40 years
  3. 5 years
  4. 140 years
Embryo sac is present inside
  1. Seed
  2. Ovule
  3. Endosperm
  4. Embryo
Water hyacinth is called as terror of Bengal due to
  1. The roots are pinkish or brownish in colour
  2. Stem is spongy and inflated petiole
  3. Broads attractive leaves and showy flower
  4. It makes water oxygen deficient
In diploid organism, gametes are produced by meiosis division but in haploid organism gametes are produced by
  1. Meiosis
  2. Reduction division
  3. Budding
  4. Mitosis
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