Forests help
to prevent diseases
to prevent rainfall
in soil erosion
to prevent floods
Our national bird is
crow
peacock
sparrow
parrot
Which one of the following are used to protect crops from pests and insects?
Water
Minerals
Glucose
Pesticides
Which one of the following is our national animal?
Dog
Tiger
Horse
Elephant
Watering and manuring are necessary for the growth of
crops
human beings
animals
algae
By observing the independence of plants and animals and circulation of oxygen and carbon dioxide we can say that
some day all the oxygen will be used up by the animals
some day all the carbon dioxide will be used up by the plants
the amount of oxygen is increasing and that of carbon dioxide is decreasing in the atmosphere
the level of oxygen and carbon dioxide in the atmosphere is kept constant
The adaptation mechanism of chameleon is to
hibernate in winter
change colours to suit its surroundings
develop scaly skin on its body to maintain moisture
migrate to long distances in winter
The feet of ducks are webbed. This adaptation helps them to
hold branches tightly
swim faster in water
float on water
eat insects and grab things
A student identifies the following characteristics in an animal
The animal may be nest categorised under:
terrestrial animals
arboreal animals
reptiles
aquatic animals
Which one of the following is the most important function of hair in animals?
it helps in regulating the body temperature
it is used to attract members of opposite sex
it is used for defense and camouflage
it is dead and is of no particular use
