List of top Botany Questions

Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?

Which one or more of the following statements is/are correct in the processing of pre-mRNA in eukaryotes?

If a 10 mM solution of a biomolecule in a cuvette with a path length of 10 mm absorbs 90% of the incident light at 280 nm, the molar extinction coefficient of the biomolecule at this wavelength is ____ M\(^{-1}\)cm\(^{-1}\). (Round off to two decimal places)

Mammalian cells cultured at low temperature (25 to 30 °C) leads to an increased sterol content in the membrane. Elevated sterols in the membrane results in

Method of phylogenetic analysis of bacteria based on DNA fragments encoding their 16S rRNA is called as

Which of the following features distinguish Bacteria from Eukarya?
(A) Membrane lipids
(B) Poly (A) tailing of mRNA
(C) Cell structure
(D) Plasmids
(E) Ribosomes
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Match List I with List II

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Nematodontous peristomes are found in

Match List I with List II

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Which of the following statements are correct?
(A) In CAM plants the fixation of \(CO_2\) to phosphoenolypyruvate to form oxaloacetate occurs at night.
(B) In photosystem I the special chlorophyll, the molecules of reaction centre are known as Peso.
(C) During photosynthesis manganese is an essential co-factor for oxygen evolving mechanism.
(D) The leaves of \(C_4\) plants are characterized by Kranz anatomy.
(E) \(C_3\) plants are more efficient utilizers of \(CO_2\) than \(C_4\) plants.
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An opportunistic fungal parasite that causes mycoses in animals:

Who popularised the term 'Biodiversity' that intends to describe the combined diversity at all the levels of biological organisation?

Match List I with List II

LIST I		LIST II
A	Recombination in Bacteria	I	Transcription factor
B	Clover leaf model	II	snRNA
C	Spliceosome	III	Rec A protein
D	Zinc-finger	IV	t-RNA

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An example of inverted ecological pyramid is :

The cell wall of a bacteria can be removed by treated it with enzyme :

In a typical angiosperm, the mature embryo sac is:

Maximum number of male gametes produced from one pollen mother cell in (microspore mother cell) will be:

Match List I with List II

LIST I Traditional crop		List II Botanical Name
A	Mungbean	I	Glycine max
B	Black gram	II	Arachis hypogaea
C	Groundnut	III	Vigna mungo
D	Soybean	IV	Vigna radiata

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Leaf spot (Tikka) is a disease of ___crop.

Match List I with List II

LIST I		LIST II
A	ABO blood group	I	Dihybird cross
B	Law of segregation	II	Monohybrid cross
C	Gene mutation	III	Base pairs substitution
D	Law of independent assortment	IV	Multiple allelism

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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.
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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: 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:

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

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Match List I with List II

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

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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: 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: