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Doctors Medicines MCQs Q&A

In mammals, an important role of excretion is played by ________

In mammals, an important role of excretion is played by ________ Correct Answer Kidneys

The kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals. They remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. In producing urine, the kidneys excrete nitrogenous wastes such as urea and ammonium.

Related Questions

Which of the following statements relating to 'role' is/are true and false?
1 The system of various roles that the individual carries and performs is 'role set'.
2. The system of various roles of which an individuals role is a part in 'role space'.
3. Self role integration, proactivity, creativity and conformation are ingredients of the role making dimension of role efficacy.
4. Role stress is caused by both role space conflict and role set conflict.
45% players played in 1st world cup out of which 25 players played in only 1st world cup. 57.5% players played in 2nd world cup out of which 45 players played in only 2nd world cup. 72.5% players played in 3rd world cup out of which 110 players played in only 3rd world cup. Find the players who played in both 1st world cup and 2nd world cup but not in 3rd world cup, if total number of players is 400.
The following questions have three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. Among 400 cricket players, find the players who played in IPL 1 and IPL 2 but not in IPL 3. Statement I: 180 players played in IPL-1 out of which 25 players played in only IPL-1. Statement II: 230 players played in IPL-2 out of which 45 players played in only IPL-2. Statement III: 290 players played in IPL-3 out of which 110 players played in only IPL-3.
Given below are two premises (a and b). From those two premises four conclusions (i), (ii), (iii) and (iv) are drawn. Select the code that states the conclusion/conclusions drawn validly (taking the premises singularly or jointly). Premises : (a) All bats are mammals. (b) No birds are bats. Conclusions : (i) No birds are mammals. (ii) Some birds are not mammals. (iii) No bats are birds. (iv) All mammals are bats.
Given below are two premises (a and b). Four conclusions are drawn from them. Select the code that states validly drawn conclusion(s) [ taking the premises individually or jointly].  Premises : (a) All mammals are warn-blooded animals. (b) No lizards are warm-blooded animals. Conclusions : (i) No lizards are mammals. (ii) Some lizards are mammals. (iii) No warm-blooded animals are lizards. (iv) All warm-blooded animals are mammals.
Statements : All men are vertebrates. Some mammals are vertebrates.

Conclusions :
I. All men are mammals.
II. All mammals are men.
III. Some vertebrates are mammals.
IV. All vertebrates are men.
In mammals, an important role of excretion is played by________
100 students played in one or more of the three games i.e. football, cricket, and hockey. A total of 34 students played either in football only or in cricket only. 16 students played in all three games. A total of 28 students played in any of the two games only.  How many students have played hockey only?
In ensuring sustainable curriculum change and improvement, whose role is crucial in the Indian context? (a) Role of students feedback (b) Role of teachers feedback (c) Role of parents reactions (d) Role of educational authorities (e) Role of public in general Give your answer from the following option:
Assertion (A) Each role must have enough stressers which may help the role occupant to stretch himself/herself to meet the challenge. In the role, where the scope is limited to routine work, the role occupants do not perceive any challenge.
Reason (R) While every role has some routine elements, challenge can also be incorporated into every role. However, the challenge should not exceed an optimal limit, otherwise it may produce dysfunctional stress, resulting in poor performance or damage to the health of the employee in the long-run.