List of top Biology Questions

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics.

(1)	Telephase	Nuclear envelop reforms, golgi complex reforms.
(2)	Late Anaphase	Chromosomes move away from equatorial plate, golgi complex not present.
(3)	Cytokinesis	Cell plate formed, mitochondria distributed between two daughter cells.
(4)	Telophase	Endoplasmic reticulum and nucleolus not reformed yet.

Meiosis takes place in

A diagram showing axon terminal and synapse is given. Identify correctly at least two of A-D

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 colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of

Select the correct statement with respect to locomotion in humans

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

A pregnant female delivers a baby who suffers from stunted growth, mental retardation low intelligence quotient and abnormal skin. This is the result of

The characteristics and an example of a synovial joint in humans is

	Characteristics	Examples
(1)	Fluid cartilage between two bones, limited movements	Knee joints
(2)	Fluid filled between two joints, provides cushion	Skull bones
(3)	Fluid filled synovial cavity between two bones	Joint between atlas and axis
(4)	Lymph filled between two bones, limited movement	Gliding joint between carpals

Macro molecule chitin is

Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/ characteristics

The essential chemical components of many coenzymes are

The Golgi complex plays a major role

Which of the following statements is not true of two genes that show 50% recombination frequency ?

Age of a tree can be estimated by

Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

Which one of the following statements is correct ?

What external changes are visible after the last moult of a cockroach nymph ?

The H-zone in the skeletal muscle fibre is due to

Which group of animals belong to the same phylum ?

A phosphoglyceride is always made up of

A major site for synthesis of lipids is

Which one of the following is not a correct statement ?

The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products

Arrows numbered 4, 8, and 12 can all be

Select the wrong statement :