MCQ
Pyrenoids are characteristically found in the chloroplast of:
- AFungi
- BAlgae
- CPteridophytes
- DAngiosperms
Explanation:
Pyrenoids are characteristically found in the chloroplast of algae.
They are one or more storage bodies present mainly in Chlorophyceae (green algae).
Pyrenoids contain protein and starch. RuBisCO enzyme is also present in pyrenoids. It helps in CO2 fixation in plants.
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$(i)$ 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.