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Recent questions in Biology

Questions >> JEEMAIN and NEET >> Biology

Biology

Diversity in Living World

Structural Organisation in Animals and Plants

Cell Structure and Formation

Plant Physiology

Human Physiology

Genetics and Evolution

Biology in Human Welfare

Biotechnology and its Applications

Ecology and Environment

Biotechnology - Principles and Processes

About 70% of the total global carbon is found in :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Quercus species are the dominant component in :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Which one of the following is the correct percentage of the two ( out of the total of 4 ) green house gases that contribute to the total global warming ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

In human adult females oxytocin :

asked Dec 21, 2013 by thanvigandhi_1

1 answer

Consider the statements given below regarding contraception and answer as directed thereafter :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

The haemoglobin of a human foetus :

asked Dec 21, 2013 by thanvigandhi_1

1 answer

Which one of the following statements is incorrect about menstruation ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Unisexuality of flowers prevents :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

What does the filiform apparatus do at the entrance into ovule ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Which one of the following pairs of pant structures has haploid number of chromosomes ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

The length of different internodes in a culm of sugarcane is variable because of :

asked Dec 21, 2013 by thanvigandhi_1

1 answer

Which one of the following is resistant to enzyme action ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

In humans, at the end of the first meiotic division, the male germ cells differentiate into the :

asked Dec 21, 2013 by thanvigandhi_1

1 answer

In humans, blood passes from the post caval to the diastolic right atrium of heart due to :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

The most active phagocytic white blood cells are :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

The blood calcium level is lowered by the deficiency of ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

During the propogation of a nerve impulse, the action potential results from the movement of :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

What wil happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor ?

asked Dec 21, 2013 by thanvigandhi_1

1 answer

Given below are four methods (A - D ) and their modes of action ( a - d) in achieving contraception. Select their correct matching from the four options that follow :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Given below is a diagrammatic cross section of a single loop of human cochlea :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Which one of the following items gives its correct total number ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Which one of the following is the correct difference between Rod cells and Cone cells of our retina ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

What is vital capacity of our lungs ?

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product ?

asked Dec 20, 2013 by thanvigandhi_1

1 answer

Which one of the following is the true description about an animal concerned ?

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin ?

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Electrons from excited chlorophyll molecule of photosystem II are accepted first by :

asked Dec 20, 2013 by thanvigandhi_1

1 answer

The fleshy receptacle of syconus of fig encloses a number of :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Replum is present in the ovary of flower of :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

The energy releasing process in which the substrate is oxidised without an external electron acceptor is called :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Nitrogen fixation in root nodules of Alnus is brought about by :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Endosperm is consumed by developing embryo in the seed of :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Importance of day length in flowering of plants was first shown in :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

In leaves of $ C_4$ plants malic acid synthesis during $ CO_2$ fixation occurs in :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Vascular tissues in flowering plants develop from :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

The rupture and fractionation do not usually occur in the water column in vessel / tracheids during the ascent of sap because of :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Dry indehiscent single - seeded fruit formed from bicarpillary syncarpous inferior ovary is :

asked Dec 20, 2013 by thanvigandhi_1

1 answer

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

The $ C_4$ plants are photosynthetically more efficient than $ C_3$ plants because :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

The fruit is chambered, developed from inferior, ovary and has seeds with succulent testa in :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it ?

asked Dec 20, 2013 by thanvigandhi_1

1 answer

Darwin's Finches are an excellent example of :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Which one of the following is incorrect about the characteristics of protobionts ( coacervates and microspheres ) as envisaged in the abiogenicorigin of life ?

asked Dec 20, 2013 by thanvigandhi_1

0 answers

Which one of the following scientist's name is correctly matched with the theory put forth by him ?

asked Dec 20, 2013 by thanvigandhi_1

1 answer

What is true about the isolated small tribal population ?

asked Dec 20, 2013 by thanvigandhi_1

0 answers

In the DNA molecule :

asked Dec 18, 2013 by thanvigandhi_1

0 answers

Which one of the following conditions in humans is correctly matched with its chromosomal abnormality / linkage ?

asked Dec 18, 2013 by thanvigandhi_1

1 answer

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