Biology:2011:CBSE:[All India]:Set-III

Foetal ejection reflex stimulates the release of hormone responsible for parturition. The name of the hormone is oxytocin.

The female wasps use the fruits of the fig plant as an oviposition. It also uses the developing seeds within the fruit for nourishing its larvae.

The phase that all organisms have to pass through before they can reproduce sexually is called the Juvenile Phase. It is known as the Vegetative Phase in plants.

The importance of biofortification is to improve public health by increasing the levels of vitamins, minerals, proteins and oils in the crops.

The mapping of human genes under human genome project will help to diagnose, treat and device new ways to prevent thousands of diseases.

Agrobacterium tumifaciens acts as a natural genetic engineer because it is capable of delivering T-DNA into plant cells to convert them into tumour cells. Its tumor inducing (Ti) plasmid is modified into a cloning vector to deliver genes of interest into a variety of plants.

The common ancestor of the great apes and man was a primate Dryopithecus that lived 15 million years ago.

Algal blooms developing due to eutrophication decrease the BOD, thus deteriorates the quality of water and causes fish mortality and negatively affect other aquatic life.

Sickle cell anemia is caused due to the substitution of Glutamic Acid (Glu) by Valine at the sixth position of the beta globin chain of the haemoglobin.

Biopiracy should be prevented as there is an increase in injustice, inadequate compensation and benefit sharing between the developed and the developing nations on biodiversity and traditional knowledge. It can be prevented if nations develop laws to prevent unauthorised exploitation of this knowledge.