Home Work 7th General Science (Semi)

 

Home Work -1

THE LIVING WORLD: ADAPTATIONS AND CLASSIFICATION

 

1. Find my match!

'A' Group                                    'B' Group

(1) Lotus                         (a) flower and leaves attract insects

(2) Aloe                           (b) Haustorial roots for absorption of food

(3) Cuscuta                    (c) Adapted to live in deserts

(4) Venus flytrap         (d) Adapted to live in water.

Answer:

(1) Lotus        -      

(2) Aloe          -      

(3) Cuscuta   -      

(4) Venus flytrap -

 

2. Who is lying?

(a) Cockroach - I have five legs.

Answer:

(b) Hen My toes are webbed.

Answer:

(c) Cactus My fleshy, green part is a leaf.

Answer:

3. Give examples of 3 plants that have:

(a) spiny fruits -

(b) spiny stem -

(c) red flowers -

(d) yellow flowers -

(e) leaves which close at night -

(f) single-seeded fruits -

(g) many-seeded fruits -

 

 

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Home Work - 2

Properties of Natural Resources

 

1. Fill in the blanks with the appropriate term.

(Temperature, volume, mass, density, humidity, acidic, weight, neutral, shape.)

(a) The capacity of air to hold moisture depends upon the ……… of the air.

(b) Water does not have a ………. but has definite …....

(c) While freezing, the ……… of water is lowered.

(d) ................... soil has pH 7.

4. With whom should I pair up?

Group 'A'                             Group 'B'

(1) Air                               (a) Excretion

(2) Water                         (b) Scattering of light.

(3) Soil                              (c) Plasticity

Answer:

(1) Air     -

(2) Water -

(3) Soil    -

5. State whether the following statements are true or false.

(a) Sandy soil has low capacity for holding water.

Answer:

(b) The substance in which a solute dissolve is called a solvent.

Answer:

(c) The pressure exerted by air is called atmospheric pressure.

Answer:

 

 

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