Question:
Fill in the blank:

(a) The insects, butterflies, honeybees and birds help flowering plants in      .
(b) A forest is a purifier of   and   .
(c) Herbs form the layer in the forest   .
(d) The decaying leaves and animal droppings in a forest enrich the   .

Answer:

(a) Pollination
The pollination (transfer of pollen grains from anther to stigma) which occurs through insects called entomophily and which occurs through ornithophily.

(b) Water and air
A forest is a purifier of water and air.

(c) Understory
Herbs form the understory layer in the forest.

(d) Topsoil
The uppermost layer of the soil is called topsoil that contains decaying leaves and animal droppings (litter).

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Question:
Fill in the blank:

(a) The insects, butterflies, honeybees and birds help flowering plants in      .
(b) A forest is a purifier of   and   .
(c) Herbs form the layer in the forest   .
(d) The decaying leaves and animal droppings in a forest enrich the   .

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Question: Fill in the blank: (a) The insects, butterflies, honeybees and birds help flowering plants in . (b) A forest is a purifier of and . (c) Herbs form the layer in the forest . (d) The decaying leaves and animal droppings in a forest enrich the .

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Question:
Fill in the blank:

(a) The insects, butterflies, honeybees and birds help flowering plants in .
(b) A forest is a purifier of and .
(c) Herbs form the layer in the forest .
(d) The decaying leaves and animal droppings in a forest enrich the .