MCQ
Heart beats are affected by
- ACarbon dioxide
- BOxygen
- CVagus nerve
- ✓All the above
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Which of the above hormones are polypeptide in nature?
Choose the correct option
$(i)$ Excretion is performed by malphigian tubules.
$(ii)$ They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut.
$(iii)$ In addition, fat body, nephrocytes and urecose glands also help in excretion.