List of practice Questions

The complex formed by a pair of synapsed homologous chromosomes is called,

Considering the stroke volume of an adult healthy human being is 70 mL, identify the cardiac output in one hour from the following :

Match List-I and List-II with respect to proteins and their functions and select the correct option.

List-I		List-II
1.	Collagen	p.	Fights infectious agents
2.	Trypsin	q.	Hormone
3.	Insulin	r.	Enzyme
4.	Antibody	s.	Intercellular ground substance

Function of contractile vacuole in Amoeba is

Toxicity of which micronutrient induces deficiency of iron, magnesium and calcium ?

Identify the floral formula pf plant belonging to potato family.

Flame cells present in the members of platyhelminthes are specialized to perform,

Match the column-I with column-II and choose the correct option from the following :

Column-I (Plant groups)		Column-II (Examples)
1.	Bryophyta	p.	Pinus
2.	Gymnosperm	q.	Adiantum
3.	Algae	r.	Sphagnum
4.	Pteridophyta	s.	Ectocarpus

Select the correctly matched pair of organisms with their order.

The function of Typhlosole in earthworm is

When the vascular cambium is present between the xylem and phloem, then the vascular bundle is called,

From the following tools / techniques of genetic engineering, identify those which are required for cloning a bacterial gene in animal cells and choose the correct option :

I.	Endonuclease	II.	Ligase
III.	tumefaciens	IV.	Microinjection
V.	Gene gun	VI.	Lysozyme
VII.	Cellulase	VIII.	Electrophoresis

A flower has 10 stamens each having bilobed dithecous anther. If each microsporangium has 5 pollen mother cells, how many pollen grains would be produced by the flower ?

Match the following columns and choose the correct option :

Column-I		Column-II
1.	Haemophilus influenzae	p.	Malignant malaria
2.	Entamoeba histolytica	q.	Elephantiasis
3.	Plasmodium falciparum	r.	Pneumonia
4	Wuchereria bancrofti	s.	Amoebiasis

An unpolarised light is incident on a glass slab such that the reflected ray is totally polarised. If the angle of refraction is 30°,the refractive index of the glass is:

Find out the correct match.

	Disease	Pathogen	Main organ affected
1.	Dysentery	Protozoa	Liver
2.	Ringworm	Fungus	Skin
3.	Typhoid	Bacteria	Lungs
4.	Filariasis	Common round worm	Small intestine

Identify the incorrect statement regarding the flow of energy between various components of the food chain.

Identify the correct option showing the relative contribution of different green house gases to the total global warming.

The toxic heavy metals from various industries which cause water pollution, normally have a density

According to David Tilman's long term ecosystem experiments, the total biomass in plots with more species shows,

During transcription the DNA strand with 3'→5' polarity of the structural gene always acts as a template because

Choose the incorrect statement with reference to Kangaroo rat.

Select the correct statement from the following :

Which of these is NOT a method to make host cells ' competent ' to take up DNA ?

PCR is used for