List of top Botany Questions

Match the following.

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

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.

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

Function of plasma membrane extensions (mesosome) of prokaryotic cell is

\[ \begin{aligned} \text{I.} \;& \text{Helps in cell wall formation} \\ \text{II.} \;& \text{DNA replication} \\ \text{III.} \;& \text{Secretion process} \\ \text{IV.} \;& \text{Helps in respiration} \end{aligned} \]
(and = all, only = only)

Which of the following is the correct answer regarding the structure of a section of cilia/flagella?

\[ \begin{array}{|c|c|c|c|c|} \hline & \begin{array}{c} \text{Peripheral microtubules} \\ \text{(doublets)} \end{array} & \begin{array}{c} \text{Central microtubules} \\ \text{(singlets)} \end{array} & \text{Radial spokes} & \text{Central sheath} \\ \hline A & 9+0 & 2 & 8 & 1 \\ \hline B & 9+2 & 9+0 & 9 & 2 \\ \hline C & 9 & 2 & 9 & 1 \\ \hline D & 3 & 6 & 9 & 1 \\ \hline \end{array} \]

Consider the following statements. Assertion (A): E. coli having pBR322 with DNA insert at BamHI site cannot grow in medium containing tetracycline. Reason (R): Recognition site for BamHI is present in the \(\mathrm{tet}^R\) region of pBR322.

Choose the incorrect match in relation to the substance and their function.

BOD of waste water is estimated by measuring the amount of

Choose the incorrect pair.

Arrange the correct order of chemical composition of living tissues/cells in terms of percentage of the total cellular mass in descending order.

Inulin is a polymer of

Which of the following genes were introduced into cotton to protect it from cotton bollworms? (and = all, only = only)

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.

Foliar stipules and modified terminal tendrilar leaflets are found in

Family Fabaceae differs from Solanaceae and Liliaceae in relation to stamens. Identify the characteristics specific to family Fabaceae.

Gene expression in eukaryotes could be regulated at \[ \begin{aligned} I. &\text{Transcription level} II. &\text{Translation level} III. &\text{Splicing processing level} IV. &\text{mRNA transport level from nucleus to the cytoplasm} \end{aligned} \] (and = all, only = only)

Hydrophytes completely submerged in water and not rooted in the mud are

Identify the wrong disease symptom with an example

Polyembryony in Citrus is due to

Experimental verification of chromosome theory of inheritance was done by

Choose the correct statement from the following

In maize coloured (C) and full endosperm (F) is dominant over colourless (c) and shrunken endosperm (f). \(F_1\) generation was subjected to test cross. It produced four phenotypes in the following percentages: \[ \begin{aligned} &\text{Coloured full }=48\% &\text{Coloured shrunken }=5\% &\text{Colourless full }=7\% &\text{Colourless shrunken }=40\% \end{aligned} \] Find out the distance between two non-allelic genes.

Conjugation in Rockweed occur

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