Class VII Science
One gets thorough knowledge of science in a very interesting way.
Questions
The __________ taste bud is present at the tip of the tongue.
- bitter
- sweet
- sour
- salty
What type of relation exists between rhizobium bacteria and leguminous plant?
- Symbiotic
- Parasitic
- Both 1 and 2 are correct
- None of these
Which horizon of the soil profile shows maximum minerals?
- Horizon -A
- Horizon- B
- Horizon-C
- Bed rock
A sample of 500 gm soil loses 15 gm of weight on drying. The percentage of moisture content in the soil is ________.
- 55%
- 25%
- 3%
- None of these
What is the function of villi in the small intestine?
- It increases the surface area for absorption of digested food.
- It moves the absorbed food to different organs.
- It helps in absorption of water.
- None of these
___________ is the example showing cutting type of vegetative propagation.
- Champa
- Potato
- Algae
- Fern
In a circuit diagram, the positive terminal is represented by ____________ line and negative terminal is represented by ________ line.
- short, longer
- longer, short
- any of the two, other
- none of these
The pulmonary veins carry ________.
- impure blood from body organs to the heart
- impure blood from lungs to the heart
- pure blood from the heart to body organs
- pure blood from lungs to the heart
The other name of copper suphate is ________.
- baking soda
- vinegar
- blue vitriol
- lime water
Photosynthesis takes place in _____.
- green leaves
- green stems
- green branches
- all of the above
Find the odd one out from the following given options.
- hurricane
- tornado
- typhoon
- none of these
What is the function of pseudopodia in amoeba?
- Movement
- Capture of food
- Digestion of food
- Option 1 and 2
Why are woolen clothes considered as warm clothes?
- Air is trapped between the fibres of woolen clothes.
- They are made of wool which is thick.
- Wool is a bad conductor of heat.
- All of the above
Who was the first person to observe the magnetic effect of electric current?
- Thomas Edison
- Einstein
- Hans Christian Oersted
- None of these
The famous Pashmina shawls are made up of wool obtained from _______.
- angora goat
- kashmiri goat
- sheep
- all of the above
In a pitcher plant, the pitcher like structure is the modified part of _____.
- stem
- apex of leaf
- leaf
- none of the above
How do plants get nitrogen?
- Nitrogen is present in abundance in the atmosphere.
- Soluble form of nitrogen is absorbed by plants along with water.
- Through fertilizers.
- Option (2) and (3) are correct.
Pick out the incorrect sentence.
(a) DNA is the nucleic acid in our body cells.
(b) Proteins in our body cells are made up of amino acid.
(c) Fat in our body contains fatty acids
- (a) is incorrect.
- (b) is incorrect.
- (c) is incorrect.
- None of the above
Stainless steel is made from _________.
- iron and carbon
- iron and chromium, nickel and manganese
- iron, carbon and metals (chromium, nickel and manganese)
- all of the above are incorrect
___________ indicator is extracted from lichen and is ________ in colour.
- Turmeric, red
- Phenolphthalein, green
- Litmus solution, purple
- None of the above
Which of the following options is correct for the given relation?
Man : Lungs as Fish :_____
- Gills
- Tracheae
- Stomata
- Spiracles
The process of rusting takes place faster in ships made of iron because _____.
- a part of ship remains dipped in sea water
- iron used in making the ship is not of a very good quality
- it is always in contact with water dissolved oxygen
- None of these
The vascular tissue phloem is used for transporting ____________ in plants.
- water
- food
- air
- none of these
On holding _______ between the path of sun rays and a paper at a specific distance, paper gets burnt.
- convex lens
- concave lens
- plain glass
- none of the above