List of top Botany Questions

Choose Incorrect statement(s) related to Roguing.
A. All out crosses should be removed as soon as they appear.
B. The diseased heads should be removed.
C. Roguing should be done every day.
D. Off type plant, volunteer plants should not be removed from seed production plot.
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: A Cosmid is a specialised vector composed of cos sites of phage 2.
Reason R: cos sites enable the DNA to get packed in lambda (2) particles.
In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The orange colour of henna is due to lawsone (C10H6O3) present in dried leaves of Lawsonia genus.
Reason R: Lawsone is an oil soluble compound which can be extracted from the leaves using soxhlet extraction.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II

LIST I		LIST II
A		I	Caryophyllaceae
B		II	Solanaceae
C		III	Chenopodiaceae
D		IV	Malvaceae

Choose the correct answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Labyrinth seeds	I	Ecbakium elaterium
B	Anenochory	II	Antennaria alpina
C	Autochory	III	Kingiodendron
D	Diplospory	IV	Oroxylum indicum

Choose the correct answer from the options given below:

PCR involves the following steps. What is the correct sequence?
A. Visualisation of amplified product
B. PCR machine run
C. DNA isolation
D. Loading of PCR run
E. PCR reaction setup in tube
Choose the correct answer from the options given below:

Match List I with List II

LIST I Metabolic Cycles		LIST II Organellae(s) involved
A	Glyoxylate Cycle	I	Chloroplast
B	Citric acid cycle	II	Glyoxysome
C	Calvin Cycle	III	Mitochondria, Chloroplast, Peroxisome
D	C2 oxidative Photosynthesis cycle	IV	Mitochondria

Choose the correct answer from the options given below:

Mendel's first three postulates include:
A. Linkage of genes
B. Unit factors in pairs
C. Dominance/Recessiveness
D. Monohybrid cross
E. Segregation
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Sugars translocated in phloem are in non-reducing form.
Reason R: The non-reducing sugars are less reactive than reducing sugars.
In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements:
Statement I: Pyrethrum compound is derived from several species of Parthenium which is widely used as an insecticidal preparation.
Statement II: Parthenium is a native plant of India grown in Northern Plains and has ecological importance.
In the light of the above statements, choose the most appropriate answer from the options given below:

The fatty acid synthesis is carried out in which part of the plant cell?

Formation of gas bubble leading to collapse of tension in liquid phase during water transport in xylem is called:

During operation of C2 oxidative photosynthetic cycle, molecules move from one organalle to another in following manner:
A. Glycine is transported to mitochondria
B. Glycolate is transported to peroxisome
C. Serine is transported to peroxisome
D. Glycerate is transported to chloroplast.
Choose the correct answer from the options given below:

Match List I with List II

LIST I Aponixis Type		LIST II Feature
A	Ixeris	I	Precocious desynapsis
B	Allium	II	MMC bypasses meiois
C	Taraxacum	III	Asyndetic meiotic prophase
D	Antennaria	IV	Premeiotic chromosome doubling

Choose the correct answer from the options given below:

Which of the following statements are true regarding the nature of cell wall of different microorganisms?
A. Cell wall of bacteria is composed of true peptidoglycan a complex having muramic acid and cross links of L-amino acids.
B. Membrane lipids of Archaea contains branched chains attached to glycerol by ether linkage.
C. Cell wall of fungi are majorly made up of chitin.
D. Virus and viroids lack cell wall.
E. Cell wall is absent in mycoplasma.
Choose the correct answer from the options given below:

In CAM pathway, the stomata :

Ultrastructural details of constituent cells of female gametophyte was first explained by:

For commercial production of hybrid seeds, the three lines namely A, B and C refer to:

Given below are two statements:
Statement I: It is valid to accept the applicability of generic name Cecropia for moths as well a tropical tree species.
Statement II: According to nomenclatural codes, same names are not allowed across the codes.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Hedyserum cornutum L. 1763 (==) Hedyserum spinosum L. 1759	I	Tantonym
B	Acacia nilotica ssp nilotica	II	Nothospecies
C	Malus malus	III	Nomenclatural synonym
D	Salix aurita X Salix caprea	IV	Autonym

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In gametophytic self-incompatible flowering plants, the direction of information to inhibit pollen tube is from pistil to pollen.
Reason R: The female determinants localized in the pistil interact with the pollen tubes in the style or ovule to inhibit the incompatible tube.
In the light of the above statements, choose the most appropriate answer from the options given below:

The type of embryogeny in which the apical cell of a 2-celled proembryo divides transversely and both the daughter cells contribute to the development of embryo is known as

Cerasus cornuta was first identified and named by Wallich but he failed to get it in a valid manner. Subsequently, it was validly published by Royle, Therefore, its scientific name would be correctly written as:

The correct order for the process of plant succession is:
A. Migration
B. Nudation
C. Ecesis
D. Stabilization
E. Reaction
Choose the correct answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Gloger rule	I	Tail, snout, ear and legs of mammals
B	Bergman rule	II	Bird wings
C	Allen rule	III	Size of animal and body parts
D	Rensch rule	IV	Effect on coloration

Choose the correct answer from the options given below: