List of top Biology Questions

How many plants in the list given below belongs to the Fabaceae family? Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin, Trifolium, Sesbania
The Lac Operon is turned on when allolactose molecules bind to :
The site of Krebs cycle is
Which one of the following human organs is often called the 'graveyard' of RBCs?
Domestic sewage of large cities
Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
Convergent evolution Divergent evolution
(a) Eyes of octopus and mammals Bones of forelimbs of vertebrates
(b) Thorns of Bougainvillea and tendrils of Cucurbita Wings of butterfly and birds
(c) Bones of forelimbs of vertebrates Wings of butterfly and birds
(d) Thorns of Bougainvillea and tendrils of Cucurbita Eyes of octopus and mammals
Which one of the following options gives the correct categorisation of animals according to the type of nitrogenous waste they give out?
Ammonotelic Ureotelic Uricotelic
(a) Pigeon, humans Aquatic amphibia, lizards Cockroach frog
(b) Frog, lizards Aquatic amphibia humans Cockroach pigeon
(c) Aquatic animals Frog, amphibia, humans Pigeon, lizards, cockroach
(d) Aquatic animals Cockroach, amphibia, humans Frog, pigeon, lizards
Anxiety and eating spicy food together in an otherwise normal human, may lead to
Compared to those of humans, the erythrocytes in frog are
The supportive skeletal structures in the human external ears and in the nose tip are examples of
Which one of the following categories of animals, is correctly described with no single exception in it?
Which one of the following is the correct statement for respiration in humans?
Which part of the human ear plays no role in hearing as such but is otherwise very much required?
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres
In gobar gas, the maximum amount is that of
During gamete formation, the enzyme recombinase participates during
Cirrhosis of liver is caused by the chronic intake of
$F _{2}$ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as $1: 2: 1.$ It represents a case of
Biolistics (gene-gun) is suitable for
Zoospores are absent in
Multiplication of DNA is called
Widal test is carried out to test
Which one of the following is not a property of cancerous cells whereas the remaining three are?
A fruit that develops from a single flower with a syncarpous pistil is :
An interconnecting membranous network of the cell composed of vesicles, flattened sacs and tubules is