प्रश्न और उत्तर का अभ्यास करें

प्र: Which of the following is an example of polygenic inheritance? 1665 0

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    Skin pigmentation in humans
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    Huntingtonʹs disease in humans
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    White and purple flower color in peas
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    The ABO blood groups in humans
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उत्तर : 1. "Skin pigmentation in humans"
व्याख्या :

Answer: A) Skin pigmentation in humans Explanation: Polygenic inheritance involves the determination of a particular phenotypic characteristic by many genes, called polygenes(group of genes influencing a quantitative characteristic), each having a small effect individually. Height and skin colour in humans are examples of Polygenic characters.

प्र: Which path through the carbon cycle is possible? 1618 0

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    Animal ----> Plant ----> Atmosphere
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    Plant ----> Animal ----> Atmosphere
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    Atmosphere ----> Plant ----> Animal
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    Plant ----> Atmosphere -----> Animal
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उत्तर : 2. "Plant ----> Animal ----> Atmosphere"
व्याख्या :

Answer: B) Plant ----> Animal ----> Atmosphere Explanation: During daylight hours, plants capture carbon dioxide from the atmosphere and use it to make carbohydrates which is stored as starch in the plant. Animals feed on the plants and extract the carbohydrates through their digestive system. The carbohydrates, namely glucose, are used by the animals for production of ATP through cellular respiration.   Cellar respiration in the animals produces carbon dioxide as a waste product. The carbon dioxide is released into the atmosphere, from where it is again captured by plants and the cycle is repeated.   Hence, option B) Plant ----> Animal ----> Atmosphere is the path possible in carbon cycle.

प्र: Find the odd man out in the following number series? 5, 4, 9, 32, 273 3081 0

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    4
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    9
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    32
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    273
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उत्तर : 3. "32"
व्याख्या :

Answer: C) 32 Explanation: The given number series follows 5, 4, 9, 32, 308 pattern that   5 5 x 1 - 1 = 4 4 x 3 - 3 = 9 9 x 5 - 5 = 40 (not equals to 32) 40 x 7 - 7 = 273   Hence, the odd man in the given number series is 32.

प्र: M, N and O can complete the work in 18, 36 and 54 days respectively. M started the work and worked for 8 days, then N and O joined him and they all worked together for some days. M left the job one day before completion of work. For how many days they all worked together? 2591 0

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    4
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    5
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    3
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    6
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उत्तर : 2. "5"
व्याख्या :

Answer: B) 5 Explanation: Let M, N and O worked together for x days. From the given data,M alone worked for 8 daysM,N,O worked for x daysN, O worked for 1 day But given thatM alone can complete the work in 18 daysN alone can complete the work in 36 daysO alone can complete the work in 54 days The total work can be the LCM of 18, 6, 54 = 108 units M's 1 day work = 108/18 = 6 unitsN's 1 day work = 108/36 = 3 unitsO's 1 day work = 108/54 = 2 units Now, the equation is8 x 6 + 11x + 5 x 1 = 10848 + 11x + 5 = 10811x = 103 - 4811x = 55x = 5 days. Hence, all M,N and O together worked for 5 days.

प्र: Saving accounts usually offer ___ interest rates than checking accounts. 1415 0

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    Higher
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    Lower
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    Equal
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    None
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उत्तर : 1. "Higher"
व्याख्या :

Answer: A) Higher Explanation: A savings account is the most basic type of account at a bank or credit union, allowing you to deposit money, keep the funds safe, and withdraw funds as needed. Savings accounts typically pay interest on your deposits, which helps you grow your money, but rates are relatively low on these low-risk accounts. A checking account is a deposit account held at a financial institution that allows withdrawals and deposits. Also called demand accounts or transactional accounts, checking accounts are very liquid and can be accessed using checks, automated teller machines and electronic debits, among other methods.   Hence, Saving accounts usually offer higher interest rates than checking accounts.

प्र: A sum of Rs. 8,000 is deposited for 3 years at 5% per annum compound interest (compounded annually). The difference of interest for 3 years and 2 years will be 1398 0

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    Rs. 387
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    Rs. 441
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    Rs. 469
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    Rs. 503
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उत्तर : 2. "Rs. 441"
व्याख्या :

Answer: B) Rs. 441 Explanation: Given principal amount = Rs. 8000 Time = 3yrs Rate = 5% C.I for 3 yrs = 8000 x 105100 x 105100 x 105100 - 8000= Rs. 1261   Now, C.I for 2 yrs = 8000 x 105100 x 105100= Rs. 820    Hence, the required difference in C.I is 1261 - 820 = Rs. 441

प्र: What is an Extension of Entity Type? 2190 0

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उत्तर :
व्याख्या :

The collections of entities of a particular Entity Type are grouped together into an entity set.

प्र: Valve between the left ventricle and Aorta? 1433 0

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    Pulmonic valve
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    Tricuspid valve
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    Aortic valve
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    Mitral valve
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उत्तर : 3. "Aortic valve"
व्याख्या :

Answer: C) Aortic valve Explanation: The Aortic valve - located between the left ventricle and the aorta The Mitral valve - located between the left atrium and left ventricle The Tricuspid valve - located between the right atrium and the right ventricle (and)  The Pulmonary (pulmonic) valve - located between the right ventricle and the pulmonary artery.

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