1. Unisexual flowers: These flowers possess either stamens (male) or pistils (female), but not both.
Example: Papaya and watermelon are examples of plants with unisexual flowers.
2. Bisexual flowers: These flowers contain both male (stamens) and female (pistils) reproductive parts within a single flower.
Example: Hibiscus and mustard are examples of plants with bisexual flowers.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes