Recent questions tagged botany

Single-celled eukaryotes are included in:

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Which one of the following structures between two adjacent cells is an effective transport pathway?

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In vitro fertilization is a technique that involves transfer of which one of the following into the fallopian tube?

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The two gases making highest relative contribution to the green house gases are –

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Coiling of garden pea tendrils around any support is an example of –

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Which one of the following is one of the characteristics of a biological community?

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Satellite DNA is useful tool in –

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Heartwood differs from sapwood in –

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Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups –

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Alage have cell wall made up of –

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$C_4$ plants are more efficient in photosynthesis than $C_3$ plants due to –

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Photoperiodism was first characterised in –

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The plasma membrane consists mainly of –

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Darwin's finches are a good example of –

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DNA or RNA segment tagged with a radioactive moleculer is called –

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One of the free-living anaerobic nitrogen-fixer is

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During mitosis ER and nucleolus begin to disappear at –

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The permissible use of the technique aminocentesis is for –

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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme?

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Which one of the following is an example of ex- situ conservation ?

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The one aspect which is not a salient feature of genetic code, is its being –

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Ovary is half-inferior in the flowers of –

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The biomass available for consumption by the herbivores and the decomposers is called –

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ABO blood groups in humans are controlled by the gene I. It has three alleles – $I^A, I^B$ and $i$. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur –

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Study the four statements (a–d) given below and select the two correct ones out of them – A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers (b) Predator star fish Pisaster helps in maintainin species diversity of some invertebrates (c) Predators ultimately lead to the extinction of prey species Production of chemicals such as nicotine, strychnine by the plants are metaboilic disorders The two correct stament are-

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PGA as the first CO2 fixation product was discovered in photosynthesis of –

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The genotype of a plant showing the dominant phenotype can be determined by –

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Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called :

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Which one of the following has its own DNA?

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Apomictic embryos in citrus arise from :

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Which one of the following cannot be explained on the basis of Mendel's Law of Dominance?

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Which of the following is a symbiotic nitrogen fixer ?

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A country with a high rate of population growth took measures to reduce it. The figure below shows age-*** pyramids of populations A and B twenty years apart. Select the correct interpretation about them : â€“

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The correct sequence of plants in hydrosere is :

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Foetal ejection reflex in human female is induced by

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Which one of the following plants is monoecios ?

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Vegetative propagation in mint occurs by :

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Which one of the following acids is a derivative of carotenoids ?

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One of the synthetic auxin is :

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Cyclic photophosphorylation results in the formation of :

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Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :

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Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :

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Palisade parenchyma is absent in leaves of -

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Aerobic respiratory pathway is appropriately termed :-

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In barley stem vascular bundles are -

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An example of axile placentation is -

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Select the incorrect statement from the following :

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The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because "O" in it refers to having :

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Study the pedigree chart given below : What does it show ?

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