biology-today_2015-03

they have to expend much energy to generate body heat through metabolism. Greater body size reduces surface area to volume ratio ...

(i) Multiplication phase – At sexual maturity, the undifferentiated primordial germ cells divide several times by mitosis to pro ...

back into the soil, while they are still young and green. This practice is used to enrich nitrogen, phosphorus and other mineral ...

As depicted in the following figure, an oat seedling was germinated in the dark. A blue light was given unilaterally to the rig ...

The phagocytic activity of macrophages against a certain pathogenic bacteria is described below. Experiment conditions Degree ...

These plant species belong to (a) P : C 3 plant Q : C 4 plant R : CAM plant S : shade plant (b) P : C 4 plant Q : C 3 plant R : ...

The odd group from the following is (a) Cray fish, pipe fish, puffer fish (b) monitor lizard, cobra, tortoise (c) scorpion, cra ...

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Q.1.If majority of our DNA is junk DNA then is it completely useless or it has some function? Can’t the junk DNA be cut off and ...

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DOWN The layer of the earth’s atmosphere that lies above the troposphere and extends to about 50 km above the earth’s surface. ...

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