Question

Tissue

1. Define: a) meristem b) tissue c) xylem d) phloem.

2. Differentiate between apical, lateral, and intercalary meristem?

3. Write the function of sclerenchyma and parenchyma cells?

4. What are the main components of phloem?

5. What are the properties of xylem tracheids and vessels?

6. What is the utility of tissues in multicellular organisms?

7. Differentiate between smooth, striated and cardiac muscles with the help of diagram?

B) PHYSICS

1) What do you mean by inertia? How is it related with inertial mass?

2) Interpret the meaning of balanced and unbalanced force with examples.

3) Define momentum. State its S.I. unit. On what factors does a momentum of a body depend?

4) How is Newton’s first law of motion interpreted from Newton’s second law of motion?

5) Why does a passenger experience a forward push when a running bus stops suddenly?

6) Explain why does a cricket player move his hands backwards, while catching a fast cricket ball.

7) A ship whose mass is 5x107kg is initially at rest is pulled by a force of 15x104N through a distance of 10m. If the

resistance due to water is negligible then what is the speed of the ship.

8) A bullet of mass 10g is fired with a rifle. The bullet takes 0.003s to move through its barrel and leaves it with a

velocity of 300m/s. What is the force exerted on the bullet by the rifle.

9) A 20g bullet pierce through a plate of mass m1=1kg and then comes to rest inside a second plate of mass

m2=2.98kg. It is found that the two plates initially at rest, now moves with equal velocities. Find the

percentage loss in the initial velocity of the bullet when it is moving between m1 and m2. Neglect any loss of

material of the plates due to action of the bullet.

10) Explain why a car does not move when the force is applied on it by a person present inside the car?

11) A bullet of mass 20g starts from rest from one end of the barrel of gun 1.5m long and weighing 40kg. The

bullet leaves at the other end with a velocity of 350m/s. Calculate (i) the time taken by the bullet to leave the

gun and (ii) the velocity of the recoil of the gun.

12. What is the difference between distance and displacement? Give two points. 14. Prove graphically and

analytically following equations of motion: (i) V=U + at (ii) v2 =u2 +2as (iii) S=ut+1/2at2

13. Draw velocity time graph when the acceleration is non-uniform. Also draw a velocity time graph of a stone

thrown vertically upwards and then coming downwards after attaining the maximum height.

14. What are different types of motion around you, state with examples?

15. Abdul while driving school computes the average speed for his trip to be20 Km/hr. On his return trip along the

same route there is less traffic and average speed is 40Km/hr. What is the average speed for Abdul's trip?

16. Draw velocity time graph for a body moving with constant acceleration and non-zero initial velocity.

17. Give one example of a situation in which a body has a certain average speed but its average velocity is zero.

18. Joseph jogs from one end A to the other end B of a straight 300m road in 2 minutes 30 seconds and then turns

around jogs 100m back to point C in another 1 minute. What are Joseph’s average speed and Velocities in

jogging from (a) from A to B (b) from A to C?

19. Convert 15 km/h to m/s and m/min.

Answer 1

B)Tissue:Group of cells in which performs certain functions.
Xylem:It helps to transport water from roots to all over plant,it is classified into four.
Pholem:It helps to transport food from every part of the plant,it is also classified into four.
 C)sclerenchyma:It consists of dead cells and it’s intercelluar space very les and give rigidity to cell
D) parenchyma:It consists of living cells and intercellular space is very large