Evolution of life shows that life forms had a trend of moving from:
a. land to water
b. dryland to wet land
c. fresh water to sea water
d. water to land
1 Answers
Talk Doctor Online in Bissoy App
A mixture of sulphur and carbon disulphide is (a) heterogeneous and shows Tyndall effect (b) homogeneous and shows Tyndall effect
(d) homogeneous and does not show Tyndall effect
1 Answers 1 views
"Napoleon had destroyed democracy in France but in the administrative field, he had incorporated revolutionary principles in order to make the
"Napoleon had destroyed democracy in France but in administrative field, he had incorporated revolutionary principles in order to make the whole systems more rational and efficient." (i) All privileges based on...
1 Answers 1 views
Skin colour in humans does not have distinct alternate forms but shows a whole range of possible variations in skin colour.
Skin colour is controlled by three genes; A,B,C dominant genes and a,b,c the recessive genes ; the effect of each type of allele is addictive ; more the dominant allele,...
1 Answers 2 views
A die is rolled. Let E be the event “die shows 4” and F be the event “die shows even number”. Are E and F mutually exclusive
When a die is rolled, the sample space is given by S = {1, 2, 3, 4, 5, 6} Accordingly, E = {4} and F = {2, 4, 6} It is observed that...
1 Answers 2 views
Define evolution. How does it occur ? Explain how fossils provide evidences in support of evolution.
Evolution: Gradual accumulation of variations and its selection by nature leading to formation of new species. Variations may arise in a population due to mutations or sexual reproduction. Sub-populations are...
1 Answers 1 views
Nandkishore gives 35% of the money he had to his wife and gave 50% of the money he had to his sons. Remaining amount of Rs. 11250
(b) Percentage of money left with Nand Kishore = 100 – (50 + 35) = 15% 15% of x = 11250 x=11250 * 100/15 =75,000
1 Answers 2 views
Why has Indian agriculture started a decline in the trend of food production? How can we overcome this Problem?
Indian agriculture started a decline in the trend of food production because: (i) More and more land is used for construction of factories, warehouses and shelters have reduced the land...
1 Answers 18 views
Since 1980, the share of the tertiary sector in the total GDP of India has: (a) shown an increasing trend
(a) The share of the tertiary sector in the total GDP or Gross Domestic Product of India is increasing which is a sign of economic development. This reproduces the trend...
1 Answers 1 views
Ten new TV shows started in January — 5 sitcoms, 3 drama and 2 news magazines. By April, only seven of the new shows were still on,
(c) At least one discontinued show was a drama.
1 Answers 1 views
An accurate clock shows 8 O' clock in the morning. Throughout how many degrees will the hour hand rotate, when the clock shows 20'
(d) Angle made by hour hand for 12 hours = 360° Angle made by hour hand for 1 hour = 360°/12 Angle made by hour hand for 6 hours = 360°/12 (6)...
1 Answers 1 views