List of top Biology Questions

Menstrual flow occurs due to lack of

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 ?

Which one of the following is not used for ex situ plant conservation ?

The tendency of population to remain in genetic equilibrium may be disturbed by

According to Darwin, the organic evolution is due to

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.

Secondary productivity is rate of formation of new organic matter by

Which one of the following is not a correct statement ?

Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

Isogamous condition with non-flagellated gametes is found in

In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called

Perisperm differs from endosperm in

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

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme ?

The term "glycocalyx" is used for

Meiosis takes place in

The foetal ejection reflex in humans triggers the release of

A thin film of water covering the soil particles and held strongly by attractive forces is called

Cork cambium of dicot stem originates from

Mosses and ferns are

A good producer of citric acid is

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

During seed germination its stored food is mobilized by

Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II

	Column I	Column II
(1)	Glycine, glucose	Small intestine, active absorption
(2)	Fructose, Na+	Small intestine passive absorption
(3)	Glycerol, fatty acids	Duodenum, move as chilomicrons
(4)	Cholesterol, maltose	Large intestine, active absorption