List of top Biology Questions

The backflow of blood into right auricle during ventricular systole is regulated by

One of the major difficulties in the biological control of insect pest is that

Which of the following is not a C4 plant?

The equipment which introduces DNA into cells is

The rate of growth of plants can be measured by a

An example of C4 plant is

Zeatin isolated from

Restriction endonucleases

Match the following

i.	Chlorenchyma	a.	Nymphaea
ii.	Aerenchyma	b.	Canna
iii.	Storage parenchyma	c.	All green parts
iv	Stellate parenchyma	d.	Potato

Match the following with respect to the morphology of the leaf:

i	Simple	a.	Zornia diphylla
ii	Bifoliate	b.	Clitoria ternatea
iii	Trifoliate	c.	Lablab purpures
iv	Compound	d.	Crotalaria juncea

The tissue generally present in all organs of plant is _________

Differentiation is change of tissues from_________________.

Plasma membrane is

Eukaryotes differ from Prokaryotes in mechanism of DNA replication due to

The Dihybrid test cross ratio is

The visual display of chromosomes arranged by size, shape and banding pattern is called as

____________ is the term used to refer to the use of bio-resources by multinational companies and other organizations without proper authorization from the countries and people concerned without compensatory payment

Level of LH is maximum :

Find odd one out.

Match the description (given in column I) with correct stage of prophase I (given column II) and choose the correct option.

Column I		Column II
A.	Chromosomes are moved to spindle fibre	I.	Pachytene
B.	Centromore splits and chromatids move apart	II.	Zygote
C.	Paring between homologous chromosomes takes place	III.	Anaphase
D.	Crossing between homologous chromosomes	IV.	Metaphase

In nephron, water absorption is maximum in

Which of the following is not a stop codon?

Karyotype of Down syndrome has how many chromosomes