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The type of conservation in which the threatened species are taken out from their natural habitat and placed in special setting where they can be protected and given special care is called:
The list of endangered species was released by which of the following organizations?
Match the items in List-I with their correct descriptions in List-II: List-I: (A) The Evil Quartet, (B) Ex-situ, (C) Lantana camara, (D) Dodo List-II: (I) Cryopreservation, (II) Alien species invasion, (III) Causes of biodiversity losses, (IV) Extinction
Which one of the following is an example of ex-situ conservation?
Which of the following is not a method of ex situ conservation?
Taxon is a unit of
The book Genera Plantarum was written by...
Which of the following is less general in characters as compared to Genus?
Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
Which one of the following statement is not true regarding gel electrophoresis technique?
In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to : (a) secretion of secondary metabolites and their deposition in the lumen of vessels. (b) deposition of organic compounds like tannins and resins in the central layers of stem. (c) deposition of suberin and aromatic substances in the outer layer of stem. (d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem. (e) presence of parenchyma cells, functionally active xylem elements and essential oils. Choose the correct answer from the options given below:
While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, (-) sign is assigned for detrimental interaction and (0) for neutral interaction. Which of the following interactions can be assigned (+) for one species and (-) for another species involved in the interaction ? (1) AMENSALISM (2) PREDATION (3) COMPENSALISM (4) PARASITISM
Given below are two statements : Statement I : Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance. Statement II : Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height. In the light of the above statements, choose the correct answer from the options given below : (1) Both Statement I and Statement II are correct (2) Both Statement I and Statement II are incorrect (3) Statement I is correct but Statement II is incorrect (4) Statement I is incorrect but Statement II is correct
The appearance of recombination nodules on homologous chromosomes during meiosis characterizes :
Transposons can be used during which one of the following?
Which part of the fruit, labelled in the given figure makes it a false fruit?
Addition of more solutes in a given solution will :
Which of the following occurs due to the presence of autosome linked dominant trait ?
Biosystematics aims at...
Species are considered as...