Biology: 2016:CBSE: [All India]:Set-II

Evidence shows that Homo habilis essentially ate fruit and did not eat meat while Homo erectus probably ate meat.

Following are two advantages of preferring CNG over diesel as an automobile fuel:

• Unlike diesel, CNG burns most efficiently and very little of it is left in the automobiles.
• CNG is cheaper than diesel.

A Male honeybee develops from an unfertilised egg by the process of parthenocarpy, while a female honey bee develops from the fertilised egg. Therefore, male honey bee has 16 chromosomes, while a female honey bee has 32 chromosomes (16+16).

Following are the objectives of setting up GEAC by our government:

1. To examine the validity of genetically modified organisms
2. To ensure the safety of introducing genetically modified organisms for public services

In MOET, the genetic mother is administered with FSH (Follicle stimulating hormone) to stimulate the production of many eggs for super ovulation. This results in the production of 6-8 eggs per cycle instead of one.

Aminoacylation is a two stage process in which, amino acids are attached to the acceptor arm of a transfer RNA molecule in order to be incorporated into proteins. The significance of aminoacylation is that specific amino acid is recognized by aminoacyl t-RNA synthetase for accurate binding with the codon in the m-RNA.

The ultra violet rays emitted from the sun, strike CFC molecules present in the environment. As a result, CFC molecules are broken down and chlorine atoms are released. A free chlorine atom binds to ozone molecule and releases single oxygen atom. It leads to the depletion of ozone layer in the stratosphere.

Sacred groves are patches of trees on forest land, which are protected communally since ages. They are highly protected due to religious and cultural traditions. Sacred groves provide refuges to a large number of rare and threatened plants. These are ecologically unique regions with rich biodiversity.

Apocarpous gynaecium:When different carpels in a gynaeceum of a flower remain completely free from one another, it is known as apocarpous gynaeceum. E.g., Rose

Syncarpous gynaecium:When different carpels in a gynaeceum of a flower unite with each other(completely or partially),it is known assyncarpous gynaeceum. E.g., Tomato

Large scale cultivation of spirullina is highly advantageous for human population because of the following reasons:
i. It is a great source of protein, vitamin B1, iron, calcium and zinc.
ii. It is very helpful in balancing blood sugar.