Are humans mammals?
Explain the following terms.
- Dead plants and animals
- Living plants
Branches of tall trees form a roof-like structure called ________.
Match Column I with Column II
Observe the food chain given below:
What would be the effect on food chain if carnivorous disappear?
Life will not be possible.
The number of herbivores will increase rapidly.
Grass will be more.
There will be no ultimate source of energy.
Trees in the forest have ______ of different types, sizes and shapes.
Give one word for the top most layer of tall trees that forms an umbrella.
- Composing humus
- Decomposing dead organisms
- Increasing rainfall
- Controlling floods
Which is not mammal?
The insects, butterflies, honeybees and birds help flowering plants in
(a) frog, fly, sugar, snake
(b) big, fish, shark, small fish, sea plant