Number of malpighian tubules present in Cockroach is
The blood vessel that carries blood from the lungs to the heart is the
In mitosis, centromere divides during
Which of the following is characteristic of all leukocytes?
Food of Hydra is :
Which are the largest of the white blood cells?
Which of the following is a medicinal plant?
Secretion of choleresis is process of
Which part of a tooth most closely resembles bone tissue?
Which one is the most over exploited plant likely to enter list of endangered plants?
Charas is obtained from
Polo game is played with the help of
The process of micropropagation is the formation of new plants from
A recently discovered ecosystem is
Biological equilibrium is found in
The process of evaporation and precipitation is known as
Tetany (irregular muscle contraction) and osteoporosis are caused due to the deficiency of
Termination of polypeptide chain is brought about by
How can a female be colour-blind?
The wood of Cycas is
The presence of continuous phenotypic variation in an F₁-generation suggests that a character is inherited by
How many types of gametes will be produced by individuals of AABbcc genotype?
Women who consumed thalidomide as antivomiting drug during early months of pregancy gave birth to children with
Pneumatic bones are expected to be found in
Between the osseous and membranous labyrinths is present a fluid called
The size of pupil is controlled by the
Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil.
Which molluscan group is primarily used in pearl production?
Which lymph nodes could not be palpated with the fingers?
Which of the following is TRUE of the spleen?
Which of the following have eye structure nearest to that of vertebrates?
Minerals absorbed by roots move to the leaf through
Biogas is combustive as it contains
Nine-tenth of all photosynthesis of world (85-90%) is carried out by
Maximum solar energy is trapped by
The treatment of various types of taxonomic data by computerized methods is
Fruit ripening is promoted by
Sleep movements in Samanea saman are regulated by
Which one of the following substances plays an important role in biochemical defence of host plants?
Nitrogen fixation occurs in
The chemical knives (scissors) used in genetic engineering is
Silicosis occurs due to
Which of the following is biodegradable pollutant?
Which of the following is true about cleavage in the fertilized egg among humans?
What is left after a bath sponge disintegrates and dries?
An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called:
For its pollination the orchid Ophrys speculum has picked on the most selective attraction in the entire animal kingdom. It is pollinated by a hairy wasp, Colpa aurea. The wasp has a fixed habit whereby its males leave the burrows for above-ground existence about four weeks before the females emerge for the open-air mating. The orchid opens its flowers about the same time the males appear and they possess an appearance and odour similar to those possessed by the female wasps. The inexperienced males mistake the Ophrys flowers for their female counterparts and land to perform the act of pseudo-copulation. The insect repeats the act with a number of orchid flowers and carries pollinia from one flower to another. This insect-plant relationship is beneficial only to the plant.
In angiosperms, the endosperm is
Fructose 6-phosphate is changed to fructose 1,6-diphosphate by
Which would be the last substrate to be used in respiration ?
Alveoli are well-suited to their function because they
Which of the following reactions would be considered a part of external respiration?
Function of stem is
Earthworm helps farmers by
Clitellum of pheretima is thick girdle that is
3 sub-families of leguminoceae are distinguished by the characters of -
Root hairs occur in the zone of
Pressure filtration occurs at the
The inability to regulate the concentration of sodium ions in the blood could be due to improper functioning of the