Recent questions tagged botany

Select the correct statement

asked Aug 21, 2018 by pady_1

1 answer

Emerson's enhancement effect and Red drop have been instrumental in the discovery of

asked Aug 21, 2018 by pady_1

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In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormally and it attacks self-cells, then it leads to

asked Aug 21, 2018 by pady_1

2 answers

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant ?

asked Aug 21, 2018 by pady_1

1 answer

A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is contaning more number of chromosomes as compared to other dividing cells. This would results in -

asked Aug 21, 2018 by pady_1

1 answer

Water soluble pigments found in plant cell vacuoles are -

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Which of the following statements is not correct ?

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Match the terms in Column-I with their description in Column-II and choose the correct option :

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A typical fat molecule is made up of -

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1 answer

In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-typeoffspring. This indicates -

asked Aug 21, 2018 by pady_1

1 answer

Which of the following approaches does not give the defined action of contraceptive ?

asked Aug 21, 2018 by pady_1

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Which of the following is the most important cause of animals and plants being driven to extinction ?

asked Aug 21, 2018 by pady_1

1 answer

The Avena curvature is used for bioassay of

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Which is the National Aquatic Animal of India ?

asked Aug 21, 2018 by pady_1

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Which of the following is not a feature of the plasmids ?

asked Aug 21, 2018 by pady_1

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The coconut water from tender coconut represents :

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The UN conference of Parties on climate change in the year 2012 was held at :

asked Aug 21, 2018 by pady_1

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Which of the following pairs is not correctly matched?

asked Aug 21, 2018 by pady_1

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In photosynthesis, the light-independent reactions take place at :

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Pick up the wrong statement :

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A column of water within xylem vessels of tall trees does not break under its weight because of -

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1 answer

Satellite DNA is important because it :

asked Aug 21, 2018 by pady_1

2 answers

Which of the following are most suitable indicators of $SO_2$ pollution in the environment?

asked Aug 21, 2018 by pady_1

1 answer

Balbiani rings are sites of :

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In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree.

asked Aug 21, 2018 by pady_1

1 answer

During ecological succession :

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Which one of the following is not applicable to RNA?

asked Aug 21, 2018 by pady_1

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Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem : (1) Secondary cortex (2) Wood (3) Secondary phoem (4) Phellem The correct order is :

asked Aug 21, 2018 by pady_1

1 answer

Identify the correct order of organisation of genetic material from largest to smallest :

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Match the columns and identify the correct option.

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Roots play insignificant role in absorption of water in :

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Increase in concentration of the toxicant at successive trophic levels is known as :

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Flowers are unisexual in :

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The imperfect fungi which are decomposers of litter and help in mineral cycling belong to :

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A gene showing codominance has :

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1 answer

In angiosperms, microsporogenesis and megasporogenesis :

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Which one of the following fruits is parthenocarpic?

asked Aug 21, 2018 by pady_1

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In his classic experiments on pea plants, Mendel did not use :

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The structures that help some bacteria to attach to rocks and / or host tissues are :

asked Aug 21, 2018 by pady_1

1 answer

Auxin can be bioassayed by -

asked Aug 21, 2018 by pady_1

1 answer

A pleiotropic gene -

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Select the wrong statement -

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1 answer

Chromatophores take part in -

asked Aug 21, 2018 by pady_1

1 answer

Among china rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?

asked Aug 21, 2018 by pady_1

1 answer

The wheat grain has an embryo with one large, shield-shaped cotyledon known as -

asked Aug 21, 2018 by pady_1

1 answer

Acid rain is caused by increase in the atmospheric concentration of -

asked Aug 21, 2018 by pady_1

2 answers

Filiform apparatus is characteristic feature of -

asked Aug 21, 2018 by pady_1

1 answer

During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by -

asked Aug 21, 2018 by pady_1

1 answer

Arrange the following events of meiosis in correct sequence - (a) Crossing over (b) Synapsis (c) Terminalisation of chiasmata (d) Diappearance of nucleolus

asked Aug 21, 2018 by pady_1

1 answer

Metagenesis refers to -

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