Question

Assertion Reason type questions Question number 1 to 5 are are Assertion(A)-Reason(R) type questions. In each of the following question a statement of Assertion is given by the corresponding statement of Reason.

Mark the correct answer as-

(a)lf both assertion and reason are true and reason is correct explanation of assertion
(b)Both assertion and reason are true but reason is not the correct explanation of assertion
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true
(e) Both assertion and reason are false

Q1. (A) Robert brown discovered nucleus
(R) Nucleoplasm And Cytoplasm Of A Living Cell Together Form The Cytoplasm

Q2. (A) Lysosomes are often called as suicidal bags of a cell
(R) Lysosomes contain hydrolytic enzymes capable of digesting cellular waste

Q3. (A) Displacement of body may be zero even when distance is not zero
(R) Displacement and distance both are scalar quantities

Q4. (A) Speed of a body is distance travelled in unit time
(R) Speed is always equal or greater than velocity

Q5. (A) The position time graph of an object in uniform motion is a straight line (R) Uniform motion object covers equal distance in equal interval of time.​​​

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Answer 1

Answer:

$\huge\red{\boxed{\orange{\mathcal{\overbrace{\underbrace{\fcolorbox{red}{cyan}{\underline{\red{❥answer࿐}}}}}}}}}$

1. A)TRUE
2. B)TRUE
3. C)FALSSE
4. D)TRUE
5. E)FALSE

1. The first person to see a cell was Robert Hook. He used a very primitive microscope and observed empty blocks like structure in the cork cells which was named as cell
2. Lysosomes are known as suicide bags of the cell because they contain lytic enzymes capable of digesting cells and unwanted materials. autolysis and burst open when the cell is damaged. This causes the hydrolytic enzymes to be released. The released enzymes then digest their own cell, causing the cell to die
3. Displacement can be zero even when distance is not zero. Consider two points A and B such that AB = 5 m. When a car travels from A to B and then back from B to A, distance = 5+5 = 10 m. Displacement = Minimum distance between final(B) and initial position(B) = 0. 
4. Speed is the distance travelled by a moving body per unit time
6. The type of motion in which the object travels with uniform speed is called Uniform motion. This means that the velocity of the body remains constant as it covers equal distances in equal intervals of time. In the case of uniform rectilinear motion, the acceleration of the body will be zero

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