MCQ
Unit of nucleic acid is
- ✓Nucleotide
- BNucleoside
- CNucleic acid
- DAll
In a nucleotide, purine or pyrimidine nitrogenous base is joined by deoxyribose pentose sugar $(d)$,
which is further linked with Phosphate $(P)$ group to form nucleotides.
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|
Column - $I$ |
Column - $II$ |
|
$1$. Fishes |
$a.\ 3, 00, 000$ |
|
$2$. Orchids |
$b.\ 28, 000$ |
|
$3$. Beetles |
$c.\ 20,000$ |
$A$. Asexual reproduction occurs usually by biflagellate zoospores.
$B$. Sexual reproduction is by oogamous method only.
$C$. Stored food is in the form of carbohydrates which is either mannitol or laminarin.
$D$. The major pigments found are chlorophyll $a$, $c$ and carotenoids and xanthophyll.
$E$. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:
Statement $I$: In $\mathrm{C}_3$ plants, some $\mathrm{O}_2$ binds to $\mathrm{RuBisCO}$, hence $\mathrm{CO}_2$ fixation is decreased.
Statement $II$: In $\mathrm{C}_4$ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration.
In the light of the above statements, choose the correct answer from the options given below: