List of top Biology Questions

Golgi apparatus is absent in
Glycosylation of proteins is done by
Eye spot is seen in
Diagrams of hypogynous, perigynous and epigynous flowers are given below. Find out the option that correctly exemplifies A, B, C and D.
Developing spermatozoa receive nutrition from
Transpiration occurs only when stomata are open. Transpiration occurs only through stomata.
Respiratory pathway is an amphibolic pathway. In respiration, there is breakdown of many substances (catabolism) and synthesis of many substances (anabolism) by respiratory intermediates.
Net primary productivity is gross primary productivity minus respiration. Secondary productivity is produced by heterotrophs.
Colpa aurea is a specialised pollinating agent of orchid Ophrys speculum. Male Colpa mistakes the Ophrys flower for female wasp to copulate with it.
Auerbach?? plexus controls the secretion of intestinal juice. Meissner?? plexus controls the peristalsis in alimentary canal.
Appetency is the formation of new structure or habit of the organism according to its need. Appetency is also called doctrine of desire.
AIDS and hepatitis B are sexually transmitted diseases. There is no permanent cure for both of them.
Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops. A gene incorporated in the bacterial mesosome gets automatically transferred to the crop with which the bacterium is associated.
A geneticist crossed two plants and got 50% tall and 50% dwarf progenies. This cross follows Mendelian law as one of the parent plant might be heterozygous.
Contraction of the cremaster muscle occurs because of
According to the accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will
Photorespiration is found in all plants. In C plants, first CO fixation product is formed in bundle sheath cells.
A patient of diabetes mellitus excretes glucose in urine even when he is kept on a carbohydrate free diet. It is because
Petroplants produce large amount of latex. The latex contains long chain hydrocarbons.
Albuminous seeds are found in
Phenylpyruvic acid is excreted through urine in case of phenylketonuria. The affected individual lacks enzyme phenylalanine hydroxylase.
In malignant tumors, the cells divide rapidly and move to distant parts of the body and cause new tumors. This property is called
What is common between a Eukaryotic & Prokaryotic flagella?
Where is sacculus rotundus located?
Histamine is secreted by