List of top Botany Questions

Identify the correct arrangement of taxonomic categories in ascending order.

The ratio of ATP utilization for \(\mathrm{CO_2}\) fixation between \(\mathrm{C_3}\) and \(\mathrm{C_4}\) plants is

Plasmodesmata are usually observed between

A mixture contains DNA fragments a, b, c and d with molecular weights of \(a+b=c\), \(a>b\) and \(d>c\). The positions of these fragments from cathode to anode sides of the gel plate are

Nodules of Soyabean export the fixed nitrogen in the form of

Choose the correct statement from the following

Units of marker used in creation of three domains are

The sequence of nucleotides of mRNA and the sequence of respective amino acids in the polypeptide chain is given below. \[ \begin{aligned} \text{mRNA: }&\text{AUG UUU AUG CCU GUU UAA} \text{Polypeptide: }&\text{Met \quad Phe \quad Met \quad Pro \quad Val} \end{aligned} \] The nucleotide sequence of DNA template strand from which this mRNA was transcribed is

Identify the mismatched pair with regard to transcription in eukaryotic cells.

Match the following.

\[ \begin{array}{|c|l|c|l|} \hline \text{List-I} & & \text{List-II} & \\ \hline A & \text{Dehydrogenases} & \text{I} & \text{Elimination of groups to form a double bond} \\ \hline B & \text{Transferases} & \text{II} & \mathrm{CO_2 + H_2O \rightarrow H_2CO_3} \\ \hline C & \text{Lyases} & \text{III} & \mathrm{S\text{-}G + S' \rightarrow S + S'\text{-}G} \\ \hline D & \text{Carbonic anhydrase} & \text{IV} & \text{Oxidation--reduction reaction} \\ \hline \end{array} \]

Chrysanthemum differ from Jasmine, in the given aspects during vegetative propagation process I. Lateral branches arise from basal and underground parts of main stem II. Branches bent and grow downwards III. Branches grow obliquely upwards IV. Lateral branches arise from the base of the main axis and are aerial

Which of the following is wrongly matched pair?

Cry II Ab and Cry I Ab produce toxins respectively that control

In which type of placentation, unilocular ovary is present? I. Marginal II. Axile III. Parietal IV. Free central V. Basal

Zygomorphic flowers showing imbricate aestivation

Commelina species produce two different types of bisexual flowers “A” and “B”. Select the correct option regarding types of flowers and modes of pollination from the Table given below:

Mad cow disease causing prion reaches humans through beef and causes which disease?

Branched chain lipids are present in the cell membrane of:

Arrange the meiotic stages in correct sequence.

In which parts of the plants of Dioscorea and Agave, the food material is stored?

\[ \begin{array}{|c|l|l|} \hline & \textit{Dioscorea} & \textit{Agave} \\ \hline \text{I} & \text{Floral buds} & \text{Tap root} \\ \hline \text{II} & \text{Subaerial stem} & \text{Floral buds} \\ \hline \text{III} & \text{Underground stem} & \text{Vegetative buds} \\ \hline \text{IV} & \text{Vegetative buds} & \text{Floral buds} \\ \hline \end{array} \]

Choose the incorrect pair (and = all, only = only).

\[ \begin{array}{|c|l|l|l|} \hline & \text{Type of fruit} & \text{Example} & \text{Character} \\ \hline \text{A} & \text{Pepo} & \text{Cucumber} & \text{Develops from inferior ovary} \\ \hline \text{B} & \text{Legume} & \textit{Pisum} & \text{Dehisce ventrally} \\ \hline \text{C} & \text{Caryopsis} & \textit{Oryza} & \text{Pericarp and seed coat are unfused} \\ \hline \text{D} & \text{Sorosis} & \text{Pineapple} & \text{Inflorescence develops into fruit} \\ \hline \end{array} \]

Which of the following restriction sites are present in amp\(^{R}\) gene of plasmid pBR322? (and = all, only = only)

\[ \begin{aligned} \text{A.} \;& \text{Pvu I} \\ \text{B.} \;& \text{Pst I} \\ \text{C.} \;& \text{BamH I} \\ \text{D.} \;& \text{Sal I} \end{aligned} \]

Match the following.

\[ \begin{array}{|c|l|c|l|c|l|} \hline \text{List-I} & & \text{List-II} & & \text{List-III} & \\ \hline \text{I} & \text{Manganese} & \text{A} & \text{Helps in anion-cation balance} & \text{P} & \text{Brown spots with chlorotic veins} \\ \hline \text{II} & \text{Zinc} & \text{B} & \text{Uptake and } Ca^{++}\text{ utilization} & \text{Q} & \text{Mottled leaf disease} \\ \hline \text{III} & \text{Boron} & \text{C} & \text{Needed for auxin synthesis} & \text{R} & \text{Heart-rot in beets} \\ \hline \text{IV} & \text{Chlorine} & \text{D} & \text{Activation of IAA oxidase} & \text{S} & \text{Bronzing in legumes} \\ \hline \end{array} \]

BOD of waste water is estimated by measuring the amount of