Q. The smallest plants on the earth are the -
1) Ferns
2) Algae
3) Fungi
4) Bacteria
Q. Which of the following is a good conductor of electricity?
1) P.V.C
2) Glass
3) Rubber
4) Graphite
Q. An electric motor converts -
1) electrical energy into heat energy
2) electrical energy into mechanical energy
3) mechanical energy into electrical energy
4) mechanical energy into heat energy
Q. Which among the following is not a renewable source of energy ?
1) Wind energy
2) Ocean energy
3) Solar energy
4) Fossil energy
Q. Blood corpuscles which help in blood clotting at the site of injury are -
1) RBCs
2) WBCs
3) Platelets
4) Eosinophils
Q. Movement of food through oesophagus is due to -
1) lubrication by saliva
2) peristalsis
3) gravitational pull
4) filtration
Q. The xylem in plants is responsible for -
1) transport of water
2) transport of food
3) transport of amino acids
4) transport of oxygen
Q. The kidneys in humans are a part of which of the following systems?
1) nutrition
2) respiration
3) excretion
4) transportation
Q. A segment of DNA providing information for a protein is called -
1) nucleus
2) chromosomes
3) trait
4) gene
Q. What percentage of genes does a child receive from its father?
1) 25%
2) 50%
3) 75%
4) 100%
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