Question
Which of the following is/are true about the human
heart? I. The heart has valves to ensure blood does not flow backwards when the atria or ventricles contract. II. Oxygen-rich blood from the lungs enters the heart via the right atrium. III. Ventricles have thicker muscular walls than the atria.Solution
Statement I is correct. Statement III is correct. Statement II is incorrect as oxygenated blood enters the heart via the Left Atrium . Hence, option C is correct.
Demographic transition theory of population was proposed by
In Stage III of Law of Diminishing marginal returns, the value of Elasticity of production is
Lab to land programme was launched by the ICAR as a part of its ___ Jubilee celebration in 1979.
How much boron concentration (mg/kg) is unsafe for plant growth?
Genes located on sex chromosomes and the associate linkage of such genes is termed as sex linkage . An example of sex linkage is
Humic substance, which is most resistant to microbial attack is:
Setting a price below that of the competition is called
How often should fumigation be done in a seed warehouse to control insects?
The total of the product cost plus the markup is:
Which was the first Bt cotton variety released by Monsanto and initially cultivated in the USA in 1996?
Relevant for Exams:
