Species

Q.

Are humans mammals?

Q.

Explain the following terms.

Arboreal habitat

Q. Decomposers feed on which of the following organisms?

1. Amoeba
2. Dead plants and animals
3. Living plants
4. Fungi

Q. Explain why there is no waste in a forest.

Q.

Branches of tall trees form a roof-like structure called ________.

Q. People say that nothing goes waste in a forest. Can you explain, how?

Q.

Question 17

Match Column I with Column II
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{(a) Decomposers}& \text{(i) dead plant and animal tissues}\\ \text{(b) Canopy}& \text{(ii) habitats for wildlife}\\ \text{(c) Porcupine}& \text{(iii) microorganisms}\\ \text{(d) Humus}& \text{(iv) wild animal}\\ \text{(e) Forest}& \text{(v) branches of tall trees}\end{array}$

Q.

Observe the food chain given below:

What would be the effect on food chain if carnivorous disappear?

1. Life will not be possible.

2. The number of herbivores will increase rapidly.

3. Grass will be more.

4. There will be no ultimate source of energy.

Q.

Trees in the forest have ______ of different types, sizes and shapes.

Q. Find the missing word from the following equation Grass→insects→frog→_______→eagle

1. cockroach
2. Snake
3. Crow
4. Peacock

Q.

Give one word for the top most layer of tall trees that forms an umbrella.

Q. What are decomposers? Name any two of them. What do they do in the forest?

Q. What are decomposers? Name any two of them. What do they do in the forest?

Q. Tall trees provide a kind of roof of leaves over other plants in the forest. This roof is called __.

1. canopy
2. branch
3. crown
4. trunk

Q. What are the functions of decomposers in a forest?

1. Composing humus
2. Decomposing dead organisms
3. Increasing rainfall
4. Controlling floods

Q.

Which is not mammal?

Q.

The insects, butterflies, honeybees and birds help flowering plants in ___.

Q. What are decomposers? Name any two of them. What do they do in the forest?

Q. Tall trees provide a kind of roof of leaves over other plants in the forest. This roof is called __.

1. trunk
2. crown
3. canopy
4. branch

Q. What are decomposers? Name any two of them. What do they do in the forest?

Q. Explain why there is no waste in a forest

Q. Examples of food chain in aquatic and desert regions

Q. Arrange the following organisms in a food chain.
(a) frog, fly, sugar, snake
(b) big, fish, shark, small fish, sea plant

Q. What is the name given to the cover of branches of tall trees in a forest?