List of top Botany Questions

Diagram represents central dogma of molecular biology. Choose the correct labelling of "X" and "Y": 


 

The number of recombinants in the 1280 progeny obtained through a dihybrid cross of Mendel in the F2 generation.

Choose the correct pair from the following: 


 

The genetic nature of TMV (Tobacco Mosaic Virus) as RNA was confirmed by:
Assertion (A): Nitrosomonas is a Chemoautotrophic bacteria.
Reason (R): Chemoautotrophs derive energy from sunlight and carbon from CO\(_2\).
In plants, growth rate is expressed in Arithmetic and Geometric growth equations. Which equation is correct?
Ratio of ATP:NADH:FADH2 produced in Krebs' cycle per one acetyl Co-A molecule by substrate level phosphorylation is:

Identify A, B, and C in the given Hatch and Slack pathway diagram:


 

In the Calvin cycle, the ratio of trioses formed, net gain, and used to regenerate RUBP is:
Identify enzyme "X" in the reaction \( {CO}_2 + {H}_2{O} \xrightarrow{{X}} {H}_2{CO}_3 \):
The element which is important in determining solute concentration and oxygen evolution:
Essential elements like Nitrogen, Phosphorus, Potassium are supplied to plants growing in soil through:
Correct equation of water potential of a cell:

Study the comparison of different transport mechanisms to pick out the correct pair in the following format: 


 

Assertion [A]: The species that invade a bare area are pioneer species 
Reason [R]: In primary succession, lichens or Phytoplanktons invade rocks and water respectively

Match the following: 


 

Identify the Anatomical structures based on the following characters given in a series:

  • Lysigenous cavities in the vascular bundles
  • Conjoint, open and endarch protoxylem in vascular bundles
  • More number of stomata in abaxial epidermis

Match the following: 

Assertion (A): Buds present in the axils of leaves are capable of forming a branch or a flower. 
Reason (R): Axillary buds are constituted by the shoot apical meristems.

The total number of meiotic divisions that occurred in a flower of malvaceae, which has 60 stamens with 25 microspore mother cells in each sporangium and 25 ovules in each carpel:

Match the following:

The number of Guanines and Adenines present in the DNA molecule of pitch at 170° with 130 Hydrogen bonds between base pairs:

Assertion (A): Satellite is a small fragment-like structure found in some chromosomes. 
Reason (R): It is a non-staining secondary construction at a constant location.

Identify the cell organelles present in animals and absent in plant cells, present in plant cells and absent in animals, present in only prokaryotes:
The author and classification followed in the below mentioned books:
I- Families of flowering plants
II- Genera plantarum
III- Species plantarum