List of top Biology Questions

Which of the following plants is monoecious?

Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain
Match Column - I with Column - II.
 List - I List - II
(a)Physalia(i)Pearl oyster
(b)Limulus(ii)Portuguese Man of War
(c)Ancylostoma(iii)Living fossil
(d)Pinctada(iv)Hookworm
Choose the correct answer from the options given below.

Match Column - I with Column - II.

Match Column - I with Column - II.
Select the correct answer from the options given below.

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

Match List - I with List - II. 

List - I

List - II

(a)Cohesion(i)More attraction in liquid phase
(b)Adhesion (ii)Mutual attraction among water molecules
(c) Surface tension(iii)Water loss in liquid phase 
(d)Guttation (iv)Attraction towards polar surfaces 

Choose the correct answer from the options given below.

 

Gemmae are present in : 

Mutations in plant cells can be induced by :
Match the hormones of Column I with its functions in Column II.
Column IColumn II
1.Catecholaminesp.Diurnal rhythm
2.MSHq.Immune response
3.Thymosinsr.Pigmentation
4.Melatonins.Stress hormone
In a standard ECG, one of the following functions of its components is not correctly interpreted.
Calculate the cardiac output of an individual having 70 heart beats/min with a stroke volume of 55 ml.
Identify the incorrect statement/s.
1. Kinetin is a derivative of Adenine which is a pyrimidine.
2. The technique of decapitation is widely used in tea plantations.
3. Ethylene is a gaseous plant hormone.
4. Use of GA3 hastens the malting process in brewing industry.
5. ABA is a growth promoter.
Match the location of the cell given in Column I with its function in Column II.
Column IColumn II
1.Mitochondrial matrixp.Kreb's cycle
2.Cytoplasmq.ETC
3.F0 and F1r.Glycolysis
4.Inner mitochondrial membranes.ATP synthesis
The enzyme that is not found in C3 plants is
The correct sequence of events in prophase I is
Match the compounds of Column I with their functions in Column II.
Column IColumn II
1.Trypsinp.Fights infectious agents
2.GLUT - 4q.Is an intercellular ground substance
3.Collagenr.Works as an enzyme
4.Antibodys.Enables glucose transport into cells
A bacterial flagellum is composed of
The following type of cell junction is not found in animal tissues
Epigynous flower is one in which
Identify the correct statement/s regarding class aves.
1. Forelimbs are modified into wings and hindlimbs are modified for walking and swimming.
2. Heart is completely four-chambered.
3. They are homeotherms.
4. They are oviparous and development is direct.
The plant body having holdfast, stipe and frond is a characteristic of
Identify the odd one out.
The concept of "Contagium vivum fluidum" was given by
Identify the correct statement/s about ex situ conservation.
Advanced ex situ conservation includes
i. Cryopreservation of gametes.
ii. Plant tissue culture method.
iii. Seed bank.
iv. In vitro fertilisation.
Match Column I and Column II
Column IColumn II
1.Narrowly utilitarian argumentp.Conserving biodiversity for major ecosystem services.
2.Broadly utilitarian argumentq.Every species has an intrinsic value and moral duty to pass our biological legacy in good order to future generation.
3.Ethical argumentr.Receiving benefits like food, medicine & industrial products.