Question
Algae are important, we should study algae because
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| Column-$I$ (Scientists) | Column-$II$ (Discovery) |
|
$A$. Ernst Mayr |
$I$. Discovered Viroids |
| $B$. Whittaker | $II$. Gave the name virus |
| $C$. Ivanowsky | $III$. Proposed five kingdom classification |
| $D$. Diener | $IV$. Evolutionary biology |

$(1)$ They have dark colour and high rate of reproduction and excrete solid urine.
$(2)$ They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs.
$(3)$ They feed on dry seeds and do not require drinking water.
$(4)$ They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements for such animals are true ?