MCQ
In a pond ecosystem, benthos means
- ✓Primary consumers in the depth of a pond
- BZooplankton on the water surface
- CPeriphyton
- DEpineuston
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$(i)$ Queen Elizabeth shows a number of haemophilic descendents.
$(ii)$ Variation in blood group prevalences due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds, female is heterozygous.