List of top Botany Questions

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

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

Which of the following statements are correct? \[ \begin{aligned} I. &\text{Inflorescence in Carrot is Umbel}\\ II. &\text{Male flowers of Ficus have three stamens}\\ III. &\text{Pneumatophores of Rhizophora are positively geotropic}\\ IV. &\text{Axillary bud develops into tendril in Grapevine} \end{aligned} \] The correct answer is (and = all, only = only)

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?

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

Choose the incorrect pair.

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

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.

BOD of waste water is estimated by measuring the amount of

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

Inulin is a polymer of

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

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

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

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)

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.

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

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.

Identify the wrong disease symptom with an example

Experimental verification of chromosome theory of inheritance was done by

Polyembryony in Citrus is due to

Choose the correct statement from the following