MCQ
Which of the following statements is correct ?
- ✓Lichens do not grow in polluted areas.
- BAlgal component of lichens is called mycobiont
- CFungal component of lichens is called phycobiont
- DLichens are not good pollution indicators
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$\begin{array}{|l|l|} \hline A & B \\ \hline (a)\,\,Bony\,\,fish & (1)\,\,Crustaceans \\ \hline (b)\,\,Terrestrial\,\,amphibiany & (2)\,\,Ammonotelic \\ \hline (c)\,\,Land\,\,snails & (3)\,\,Ureotelic \\ \hline (d)\,\,Prawn & (4)\,\,Uricotelic \\ \hline \end{array}$
| List $I$ | List $II$ |
| $A.$ Pons | $I.$ Provides additional space for Neurons, regulates posture and balance. |
| $B.$ Hypothalamus | $II.$ Controls respiration and gastric secretions. |
| $C.$ Medulla | $III.$ Connects different regions of the brain. |
| $D.$ Cerebellum | $IV.$ Neuro secretory cells |
Choose the correct answer from the options given below :
| Column $-I$ | Column $-II$ |
| $(A)$ Ketone | $(p)$ has $5$ carbon sugar, a phospphate group and a nitrogenous base |
| $(B)$ Fatty acid | $(q)$ has long chain of carbon and hydrogen atoms and a carboxyl group at one end |
| $(C)$ Aldehyde | $(r)$ has a carbonyl group at the end of the carbon chain |
| $(D)$ Nucleotide | $(s)$ has a carbonyl group within the carbon chain |