List of top Biology Questions

The monohybrid genotypic ratio 1 : 2 : 1 in F generation indicates
When pollen grain is shed at 3-celled stage, name the cells it contains.
The microorganisms involved in floe formation during sewage treatment are
The technique of bombarding plant cells with high velocity microparticles of gold or tungsten, coated with DNA, is
ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :
The lowest water potential in the xylem will be of:
Human urine contains
Which is function of calcium ?

Who developed DNA fingerprinting?

When was Montreal Protocol signed?
Companion cells are associated with
Citrus canker is caused by
The term "gene" was introduced by:
The infective stage of Entamoeba histolytica is:
The endosperm in gymnosperm is formed after fertilisation. The endosperm of gymnosperm is formed by triple fusion.
Ploidy of endothecium, microspore mother cell, tapetum and microspore is respectively,
Pteridophytes are also called as:
Which is present in urine of pregnant woman
Thermococcus, Methanococcus and Methanobacterium exemplify
The site of origin of the new plantlets in potato, dahlia, ginger and banana is
The saturation point of CO in C plants is
The given diagrams show stomatal apparatus in dicots and monocots. Which one is correct option for A, B and C?
The experiment material used by Van Neil, to prove that O comes out from water was studied on
Shape of chloroplast of Ulothrix is
Select the correct matching.