List of top Biology Questions

What external changes are visible after the last moult of a cockroach nymph ?
Select the wrong statement :
Menstrual flow occurs due to lack of
Which one of the following is not used for ex situ plant conservation ?
Secondary productivity is rate of formation of new organic matter by
According to Darwin, the organic evolution is due to
Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?
The tendency of population to remain in genetic equilibrium may be disturbed by
A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics.
A stage in cell division
(1)TelephaseNuclear envelop reforms, golgi complex reforms.
(2)Late AnaphaseChromosomes move away from equatorial plate, golgi complex not present.
(3)CytokinesisCell plate formed, mitochondria distributed between two daughter cells.
(4)TelophaseEndoplasmic reticulum and nucleolus not reformed yet.
Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.
schematic plan of blood circulation
Which one of the following is not a correct statement ?
Isogamous condition with non-flagellated gametes is found in
Perisperm differs from endosperm in
Which of the following is not correctly matched for the organism and its cell wall degrading enzyme ?
In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called
The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products
represent the three major biosynthetic pathways in aerobic respiration
Arrows numbered 4, 8, and 12 can all be
The term "glycocalyx" is used for
The foetal ejection reflex in humans triggers the release of
Meiosis takes place in
Cork cambium of dicot stem originates from
A thin film of water covering the soil particles and held strongly by attractive forces is called
Mosses and ferns are
The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of
Interfascicular cambium develops from the cells of
Figure shows human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and/ or functions
human urinary system with structures labelled A to D