List of top Biology Questions

Bacteria protect themselves from viruses by fragmenting viral DNA upon entry with
Guard cells control
Yellowish edges appear in leaves deficient in
Photolysis of water by isolated chloroplasts was demonstrated by
Most of the biological energy is supplied r mitochondria through
Endangered plants spedes are conserved through
Progesterone level falls during
Astral rays are formed of
Which of the following is a test cross?
Which one of the following is a natural growth inhibitor?
Pneumatic bones are expected to be found in
Ligament is mainly made up of
Indian rhinoceros are protected in
Stop codons are
1 : 2 : 1 phenotypic and genotypic ratio is found in
The back bone of RNA consists of which of the following sugar?
Growth of pollen tube towards embryo sac is
From outer to inside the sequence of three bones present in the middle ear of mammals is
Root hair absorbs water from soil through
Which of the following sequences is truly a systemic circulation pathway?
In the diagram of the lateral view of the human brain, parts are indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate
Transformation of the early reducing atmosphere of the earth into an oxidizing atmosphere was mainly due to the activities of
Notochord, skeletal system and dermis of the skin are the derivatives of
The problem of necrosis and gradual senescence while performing tissue culture can be overcome by
Nitrogenous waste products are eliminated mainly as