Tag: evs - i

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Questions Related to evs - i

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

In heredity, the genes are obtained from

  1. Father

  2. Mother

  3. Both

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Heredity is the passing on of traits from parents(i.e both father and mother) to their offspring, either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.

So, the correct answer is 'Both'.
Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Transmission of traits from one generation to the next generation is called as

  1. Reproduction

  2. Heredity

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Heredity can be defined as the passing of phenotypic traits from parents to their offspring, either through asexual reproduction or sexual reproduction. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause some species to evolve through the natural selection of specific phenotypic traits. 
Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance
Reduction in weight of an organism due to nutrition is genetically controlled.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genetically controlled traits are the one which is regulated by genes and are inherited from one generation to next via the process of reproduction. The overall appearance of an organism (phenotype) is the product of its genotype and environmental factors. The weight of an organism is determined in part by its genotype and in part by environmental factors like nutrition, lifestyle, physical activity etc. Thus, reduction in weight due to malnutrition is the environmental factor and is not determined genetically. Thus, the correct answer is option B 

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Heredity deals with the study of______________

  1. Resemblances and differences between the parent and offspring

  2. Resemblances between the parent and offspring

  3. Differences between the parent and offspring

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the process of sexual reproduction, the offsprings produced neither totally resemble (i.e., identical to) their parents nor are they totally different from their parents. Hence, heredity deals with the study of both resemblances and differences of offspring with their parents.

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Chromosome theory of heredity was postulated by

  1. Charles Darwin

  2. Gregor Mendel

  3. Sutton and Boveri

  4. Har Gobind Khorana
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mendel, during his hybridization experiments on pea plant, proposed presence of unit factors for each trait as heredity material that is faithfully transmitted from one generation to next. He called them “factors”. Sutton and Boveri recognized parallelism between inheritance of Mendel's factors and behavior of the chromosome in meiosis and fertilization. This led them to propose the chromosomal theory of inheritance states that genes are linearly arranged on chromosomes at specific loci. Darwin proposed the theory of natural selection to explain the process of evolution. Khorana extended the experiment of Nirenberg and Holley to reveal that polycytidylate encodes a polypeptide containing only proline and polyadenylate encodes polylysine. M. Nirenberg, Khorana, and Holley were awarded Nobel Prize for in vitro synthesis of polypeptides using artificially synthesized mRNA. Thus, the correct answer is option C.

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Being born with certain features or traits in common with the members of our family is 'heredity'.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hereditary characters are physical or mental characteristics that pass from one generation to another in a family. Heredity is passing of that trait or certain features from parents to offspring.

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Developing our skills helps us to live an independent, useful and enriching life.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Not everyone born with inherent skills or talent instead human beings learn and develop skills over the time to make their own survival better. Developing skills make a person confident and independent. One can earn and lead a healthy life by adopting their desired career line.

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Our height grows till we are about ______ years old.

  1. 12

  2. 14

  3. 16

  4. 18
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Our height grows till we are about eighteen years old. There are various factors that determine the height of any person. Like genetics, nutrition, lifestyle etc. Increases in height are primarily due to the lengthening of our bones and growth plates.

Multiple choice evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

Along with nutritious food, adequate exercise is also necessary for growth and development.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is an old proverb that a healthy mind resides in a healthy body. Food rich in nutrition is a primary requirement for a healthy body but regular physical exercise along with nutritious food maintain the balance of minerals, protein etc in the body and keeps unnecessary diseases away from the body.

Multiple choice evs - i community health and hygiene diseases caused by changes in lifestyle diseases and toxic substance non-infectious diseases health and its maintenance

Which one of the following is the correct statement regarding the particular psychotropic drug specified?

  1. Cocaine causes after thought perceptions and hallucinations.

  2. Opium stimulates nervous system and causes hallucinations.

  3. Morphine leads to delusions and disturbed emotions.

  4. Barbiturates cause relaxation and temporary euphoria.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cocaine are stimulants that is they elevate mood, increase feelings of well-being and increase energy and alertness.
Opium  and morphine are powerful pain-killers. They produce a quick, intense feeling of pleasure followed by a sense of well-being and calm.
Barbiturates are depressants that slow down the normal brain function.
Thus, the correct answer is 'Barbiturates cause relaxation and temporary euphoria'.