MCQ
Percentage ( $\%$ ) sign is used for
- AActinomorphic flower
- ✓Zygomorphic flower
- CIncomplete flower
- DEpigynous flower
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$R -$ The concentration of $CO_2$ is between $0.03$ and $0.04$ percent. Increase in concentration upto $0.005$ percent can cause an increase in $CO_2$ fixation rates.
| List-I | List-II |
| (A) Flat worms | (I) Nephridia |
| (B) Paramoecium | (II) Contractile vacuole |
| (C) Periplaneta | (III) Protonephridia |
| (D) Earth worms | (IV) Urecose gland |