1 marks
Q.1.Define Biological magnification?
Q.2.Why carbon forms strong bond with other carbon atoms,oxygen,sulphur or nitrogen?
Q.3.List any to function of food chain in an ecosystem?
Q.4.Name the part of eye responsible for conversion of light into electrical impulse?
Q.5.Which bond mostly shown by carbon in its compound?
Q.6.Name the triatomic gas which absorbs ultra violet rays?
Q.7.Identify functional group of following-
(a).C2H5OH (B).CH3COOH
Q.8.Why stop signals are red?
Q.9.Which category of organism forms the starting point of food chain?
Q.10.Write IUPAC names
(a)Ethyl alcohol (b).Acetic acid
ANSWERS
1.The increase in the concentration of the harmfharmful chemicals at the
subsequent trophic levels in a food chain is known as biological magnification.
2.Due to small size and presence of four valence electrons.
3.Functions of food chain:
i).Food chain maintains ecological balance.
ii).Food chain helps in transforming solar energy into chemical energy
amongst the various members of the food chain.
4.Retina.
5.Covalent bond.
6.Ozone.
7.(a).Ethanol (b).Ethanoic acid
8.In the visible spectrum, the red colour has the largest wavelength.
The red colour is least scattered by fog or dust particles. So we can
observe red colour easily even in foggy conditions.
9.Producers or autotrophs (plants).
10.(a)Ethanol (b).Ethanoic acid
Q.1.Define Biological magnification?
Q.2.Why carbon forms strong bond with other carbon atoms,oxygen,sulphur or nitrogen?
Q.3.List any to function of food chain in an ecosystem?
Q.4.Name the part of eye responsible for conversion of light into electrical impulse?
Q.5.Which bond mostly shown by carbon in its compound?
Q.6.Name the triatomic gas which absorbs ultra violet rays?
Q.7.Identify functional group of following-
(a).C2H5OH (B).CH3COOH
Q.8.Why stop signals are red?
Q.9.Which category of organism forms the starting point of food chain?
Q.10.Write IUPAC names
(a)Ethyl alcohol (b).Acetic acid
ANSWERS
1.The increase in the concentration of the harmfharmful chemicals at the
subsequent trophic levels in a food chain is known as biological magnification.
2.Due to small size and presence of four valence electrons.
3.Functions of food chain:
i).Food chain maintains ecological balance.
ii).Food chain helps in transforming solar energy into chemical energy
amongst the various members of the food chain.
4.Retina.
5.Covalent bond.
6.Ozone.
7.(a).Ethanol (b).Ethanoic acid
8.In the visible spectrum, the red colour has the largest wavelength.
The red colour is least scattered by fog or dust particles. So we can
observe red colour easily even in foggy conditions.
9.Producers or autotrophs (plants).
10.(a)Ethanol (b).Ethanoic acid
No comments:
Post a Comment