Assignment 3 - Class : 10- Subject : Science

 

Biology

UNIT-12 Plant Anatomy and Plant Physiology Part - A

I. Choose the correct answer

1.  Who is the father of plant anatomy?

 a) Sachs                b) Nehemiah Grew         c) Melvin Calvin      d) C.N.R.Rao

 2.  The group of cells which are similar or dissimilar in structure and origin that perform similar function is called

a) Organ System  b) Vascular Bundles         c) Tissues              d) Pericycle

3.  The pores present in Epidermis are called

a) Stomata           b) Cuticle                         c) Trichome         d) Stele

4.  Xylem and Phloem are present in different radii of ----------

a) root                b) stem                              c) leaf                   d) flower

5.  If xylem and phloem lie on the same radii that vascular bundle is --------------

a) radial bundle                                  b) conjoint bundle

c) concentric and amphivasal              d) amphicribral

  

Part - B

 II.  Short Answer.

6. What are tissues?

 

7. Classify the types of plant tissues.

 

8. What are the functions of Dermal or Epidremal tissue system?

III.   Write In detail

      9.a)Differentiate the following Monocot root and Dicot root

    b) Draw a neat labelled diagram of Radial vascular bundle.

 

10.a) Write the components and functions of plant tissue system.

      b) Classify the tissues based on their ability to divide.

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Assignment 2- Class:10--Subject: Science

 

Chemistry -Unit 1

UNIT-7 Atoms and Molecules (Assignment Questions) Part -A

I.  Choose the correct answer

 1.  Number of electrons, protons and neutrons present in   17Cl³⁵,   17Cl³⁷    is-------

a) 17e¯ , 17p+, 17n                                                         b) 18e¯ , 18p+, 17n  

  17e¯ , 20p+, 19n                                                             17e¯ , 17p+, 19n

 c) 17e¯ , 17p+, 18n                                                          d) 18e¯ , 17p+, 18n

20e¯ , 20p+, 17n                                                              17e¯ , 17p+, 20n

2.  Isobars are defined as---------

a)   Elements show same atomic number with different mass number

b)  Elements show same mass number with different atomic number

c)   Elements show same valency

d)  None of these

3.  The Atomicity of Glucose molecule is                .

a) 6                          b) 12                            c)24                       d) 18

4.  The mass of 5 moles of sodium is -------------

a) 46g                   b) 34g                             c) 105g                  d) 115g

5.  Number of atoms present in 3 moles of iron is--------

a)   6.023 x 10²³     b) 18.069 x 10²³              c) 12.046 x 10²³    d) None

Part - B

II.  Short Answer.

6.   Define : Relative atomic mass

 

7.Give any two examples for heteroatomic molecules 8.Calculate the number of moles in 46 g of Sodium?

 

Part - C

III. Write In detail.

9.Give the salient features of “Modern Atomic Theory”.

Assignment 1- Class:10 Subject:Science

 

Assignment

Class:10                                                                                  Subject:Science

Physics

UNIT-1 Laws of motion Part – A

I. Choose the correct answer

1.  Inertia of a body depends on--------------

 

a) Weight of the object                                 b) acceleration due to gravity

 

c) mass of the object                                    d) Both a and b

 2.  In a rocket, a large volume of gases produced by the combustion of fuel is allowed to escape through its tail nozzle in the downward direction with the tremendous speed and makes the rocket to move upward. Which principle is followed in this take off of the rocket?

a) Moment of inertia                           b) Conservation of momentum

 c) Newton’s first law of motion           d) Newton’s law of gravitation

 3.  There are two statements

 A)   Newton’s first law is valid from the pilot in an aircraft which is taking off

 B)   Newton’s first law is valid from the observer in a train moving with constant velocity

Which of the following is correct?

 a) A only              b) B only              c) Both A and B       d) Both A and B wrong

 4.    Which of the following law is used to discover new stars and planets?

 a) Newton's first law                          b) Newton's second  law

c) Newton's third law                         d) Newton's law of gravitation

 

5.  The Resultant force of two equal parallel forces acting in opposite direction in the same line of action is

 

a) Fnet = F₁ + F₂                                  b) Fnet = F₂-F₁

 

c) Fnet = F₂+F₁                                   d) Fnet=0

 

Part – B

II.  Short Answer

6.  Define Inertia. Give its classification

7.   If a 5N and a 15N forces are acting opposite to one another. Find the resultant force and the direction of action of the resultant force.

8.   State Newton’s second law.

 

Part – C

III.  Write in Detail

9. What are the types of Inertia? Give an example for each type.