Q. No- 1 - 90 carry 4 marks each and 1 mark is deducted for every wrong answer.
Q.
Leaves become modified into spines in :
Vertical distribution of different species occupying different levels in a biotic community is known as :
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Transpiration and root pressure cause water to rise in plants by :
Gene regulation governing lactose operon of E.coli that involves the lac I gene product is :
High value of BOD (Biochemical Oxygen Demand) indicates that :
Which of these is not an important component of initiation of parturition in humans?
A chemical signal that has both endocrine and neural roles is
Match each disease with its correct type of vaccine :
The crops engineered for glyphosate are resistant/tolerant to:
Vascular bundles in monocotyledons are considered closed because :
Read the following five statements (A to E) and select the option with all correct statements :
(A) Mosses and Lichens are the first organisms to colonise a bare rock.
(B) Selaginella is a homosporous pteridophyte.
(C) Coralloid roots in Cycas have VAM.
(D) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
(E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte
Which one of the following statements in not true?
Removal of proximal convoluted tubule from the nephron will result in :
A gymnast is able to balance his body upside down even in the total darkness because of :
Which one of the following may require pollinators, but is genetically similar to autogamy?
In sea urchin DNA, which is double stranded, 17 % of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are :
Which of the following had the smallest brain capacity?
Which of the following viruses is not transferred through semen of an infected male?
A major characteristic of the monocot root is the presence of :
Blood pressure in the mammalian aorta is maximum during:
In Bt cotton, the Bt toxin present in plant tissue as pro?toxin is converted into active toxin due to :
In an ecosystem the rate of production of organic matter during photosynthesis is termed as :
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