List of top Biology Questions

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:

Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?

Respiratory Quotient (RQ) value of tripalmitinis:

What is the direction of movement of sugars in phloem?

It takes very long time for pineapple plante to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Phloem in gymnosperms lacks :

Thiobacillus is a group of bacteria helpful in carrying out:

Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:

Which of the following immune responses is responsible for rejection of kidney graft?

What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile?

Which one of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes?

Which of the following muscular disorders is inherited?

Expressed Sequence Tags (ESTs) refers to:

Which of the following ecological pyramids is generally inverted?

The Earth Summit held in Rio de Janeiro in 1992 was called:

Match the hominids with their correct brain size:

a	Homo habilis	i	900 cc
b	Homo neanderthalensis	ii	1350 cc
c	Homo erectus	iii	650-800 cc
d	Homo sapiens	iv	1400 cc

Select the correct option. 

Select the hormone-releasing Intra-Uterine Devices.

Match the Column -I with Column-II:

	COLUMN I		COLUMN II
a	P-wave	i	Depolarisation of ventricles
b	QRS complex	ii	Repolarisation of ventricles
c	T-wave	iii	Coronary ischemia
d	Reduction in the of size of T-wave	iv	Depolarisation of atria
		v	Repolarisation of atria

Select the correct option.

Which of the following is true for Golden rice?

Xylem translocates:

Select the incorrect statement.

What is the site of perception of photoperiod necessary for induction of flowering in plants?

Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:

Extrusion of second polar body from egg nucleus occurs:

Which of these following methods is the most suitable for disposal of nuclear waste?