List of top Biology Questions

The deficiency of this micro nutrient results in ??ittle leaf?
The coxal bone consists of
The correct match for kind of respiration is
The concept of Joint Forest Management $(JFM)$ involves
The component of nitrogenase and nitrate reductase is
The commonest living, which can respire in the absence of O is
The common bile duct in human is formed by the joining of
The characters which appear in the first filial generation are called
The characteristic(s) common to urea, uric acid and ammonia is/are (i) They are nitrogenous wastes (ii) They all need very large amount of water for excretion (iii) They are all equally toxic (iv) They are produced in the kidneys
The characteristic property of organization is present
The cell wall is composed of two thin overlapping shells which fit together like a soap case in
The cells called '$HIV$ factory' is
The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
The Bt toxin is not toxic to human beings because
The breeding carried out between animals of different breeds is called
The ascending or descending arrangement of taxonomic categories is called as
The antibody which can cross placental barrier is
The anther wall consists of four wall layers where
The amount of DNA in a mammalian cell in early prophase I is x. What is the amount of DNA in the same cell in anaphase I of meiosis?
The amino acid attaches to the $tRNA$ at its
The accumulation of uric acid crystals in the region of joints resulting in painful movements causes
The accompanying diagram shows the uterine tubes of four women ($P, Q, R$ and $S$).
In which two women is fertilisation impossible at present?
The absence of centrioles from higher plant cells means that during somatic cell nuclear division there is :
The abbreviation $AIDS$ stands for
Tetradynamous stamens are found in