MCQ
Which one of the following sets includes the bacterial disease
- ACholera, typhoid, mumps
- BTetanus, tuberculosis, measles
- CMalaria, mumps, poliomyelitis
- ✓Diphtheria, leprosy, plague
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$I.$ The total organic matter synthesised by the producers in the process of photosynthesis per unit time and area is known as gross primary productivity
$II.$ Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume per unit time

$Y$ - Method of embryo sac formation from a single megaspore is termed monosporic
$Statement 2$: Certain contraceptives are planted under the skin of the upper arm to prevent pregnancy