MCQ
Which one increases in the absence of light?
- AUptake of minerals.
- BUptake of water.
- ✓Elongation of internodes.
- DAscent of sap.
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Assertion $A:$ In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.
Reason $R$ : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.
In the light of the above statements, choose the correct answer from the options given below :
$(I)$ Amyloplasts - Store proteins
$(II)$ Mitochondrion - 'Power house' of the cell
$(III)$ Stroma - Chlorophyll pigment
$(IV)$ Axoneme $-9+2$ array