Q. The absorbance of a solution of tryptophan measured at 280 nm in a cuvette of 2.0 cm path length is 0.56 at pH 7. The molar extinction coefficient (e) for tryptophan at 280 nm is 5600 M-1cm-1 at pH 7. The concentration of tryptophan (in Β΅M) in the solution is Ans: 0.32 to […]
Identify the incorrect statement. Option 1 : In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent.Option 2 : Zoospores are sexual reproductive structures.Option 3 : In asexual reproduction, a single parent produces offspring with or without the formation of gametes.Option 4 : Conidia are asexual structures in structures.
Q. The variable π§ has a standard normal distribution. If π(0 β€ π§ β€ 1) = 0.34, then π(π§2 > 1) is equal to (up to two decimal places) Β Β Β Β Β Β Β Β Β Β Ans: 0.32 to 0.32
The variable π§ has a standard normal distribution. If π(0 β€ π§ β€ 1)= 0.34 Read More Β»
Choose the correct statement from amongst the following: Option 1 : Dioecious (hermaphrodite) organisms are seen only in animals.Option 2 : Dioecious organisms are seen only in plants.Option 3 : Dioecious organisms are seen in both plants and animals.Option 4 : Dioecious organisms are seen only in vertebrates.
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There is no natural death in single celled organisms like Amoeba and bacteria because Option 1 : They cannot reproduce sexually.Option 2 : They reproduce by binary fission.Option 3 : Parental body is distributed among the offspring.Option 4 : They are microscopic.
There is no natural death in single celled organisms like Amoeba and bacteria because Read More Β»
Q. Which one of the following plant secondary metabolites is a natural insecticide? (A) DigitoxinΒ Β Β Β Β Β Β Β (B) PyrethrinΒ Β Β Β Β Β Β Β Β Β Β Β Β (C) Salicylic acidΒ Β Β Β Β Β Β Β Β Β (D) Avenacin A-1 Ans: Pyrethrin
Which one of the following plant secondary metabolites is a natural insecticide? Read More Β»
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction becausec Option 1 : Sexual reproduction is a lengthy process.Option 2 : Gametes of parents have qualitatively different genetic composition.Option 3 : Genetic material comes from parents of two different genetic compositions.Option 4 : Greater amount of DNA is involved in
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because Option 1 : Nodes are shorter than internodesOption 2 : Nodes have meristematic cellsOption 3 : Nodes are located near the soilOption 4 : Nodes have non-photosynthetic cells
Q. Which one of the following is the solution for πππ 2π₯ + 2πππ π₯ + 1 = 0, for values of π₯ in the range of 0Β° < π₯ < 360Β°? Β Β Β Β Β Β Β Β Β Β Β Β (A) 45°             (B) 90°                       (C) 180°                     (D) 270Β° Ans: 180Β°Β
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively Option 1 : 12, 24, 12Option 2 : 24, 12, 12Option 3 : 12, 24, 24Option 4 : 24, 12, 24
