List of top Botany Questions

In Meselson--Stahl's experiment, if DNA of E.coli is extracted after 40 minutes, what will be the densities of DNA molecules formed (2nd generation)?

Following statements are related to lipids. Identify the correct option.

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

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

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

In Morgan's experiments on linkage percentage of white and yellow body recombinant flies in \(F_{2}\) generation is:

From the following lists, choose the correct combinations.

\[ \begin{array}{|c|l|l|l|} \hline & \text{List-I (Substrate)} & \text{List-II (Enzyme)} & \text{List-III (Product)} \\ \hline \text{I} & \text{PGA + ATP} & \text{Phosphoglycerokinase} & \text{Bis PGA} \\ \hline \text{II} & \text{Bis PGA + NADPH} & \text{G-3-P dehydrogenase} & \text{G-3-P} \\ \hline \text{III} & \text{Xylulose} & \text{Epimerase} & \text{Ribulose} \\ \hline \text{IV} & \text{Fructose + G-3-P} & \text{Transketolase} & \text{Xylulose} \\ \hline \end{array} \]
The correct answer is (and = all, only = only)

Choose the incorrect pair.

Foliar stipules and modified terminal tendrilar leaflets are found in

Match the following. \[ \begin{array}{ll} \text{I. Mustard} & \text{A. Superior} \text{II. Ray florets of sunflower} & \text{B. Half inferior/superior} \text{III. Pea} & \text{C. Inferior} \text{IV. China rose} & \text{D. Superior} \end{array} \] \[ \begin{array}{ll} \text{P. Parietal} & \text{Q. Basal} \text{R. Marginal} & \text{S. Axile} \end{array} \]

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)

Inulin is a polymer of

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

\[ \begin{array}{|c|l|l|} \hline & \text{List-I} & \text{List-II} \\ \hline \text{A} & \text{Frankel Conrat} & \text{Genetic nature of DNA} \\ \hline \text{B} & \text{Bessey} & \text{Phylogenic classification} \\ \hline \text{C} & \text{Buchner} & \text{Zymase} \\ \hline \text{D} & \text{Sumner} & \text{Catalase} \\ \hline \end{array} \]

Non membrane bound cell organelles present in animal cells I. Ribosomes II. Vacuole III. Centriole IV. Lysosome

The term systematics refers to

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)

Identify the wrong disease symptom with an example

Flower inducing hormone in pineapple

Phenotype and genotype ratios in \(F_{2}\) progeny are the same in:

Excluding the carboxyl carbon, identify the number of carbon present in the Arachidonic acid and palmitic acid respectively.

Assertion (A): Till date no man made technology has been able to rival the microbial treatment of sewage. Reason (R): Major part of the waste water is human excreta, this may contain organic matter, microbes, and some pathogens.

Match the following lists regarding mineral element essentiality: figure [H]

figure

Parbhani Kranti, a variety of Bhindi, has resistance to: