Fill in the following blanks with suitable words:

(a) Decomposer organisms are ___in their action.

(b) In nature, all green plants are___ whereas animals are consumers.

(c) A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a ___

(d) The science that deals with the inter-relationships of living things with one another and their environment is called___

(e) Plastic is a ___ material whereas paper is a ___material.

Q. Fill in the following blanks with suitable words :
(a) Decomposer organisms are..........in their action.
(b) In nature, all green plants are............ whereas animals are consumers.
(c) A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
(d) The science that deals with the inter-relationships of living things with one another and their environment is called...........
(e) Plastic is a ...............material whereas paper is a.............material.

Q.

Fill in the blanks.

1. Living things in the environment are ……………. factors.

2. Biotic factors, abiotic factors and their interactions with one another form an ………….. .

3. …………… itself is one large biome.

4. The number of biotic factors in an ecosystem is decided by …………….. .

5. Green plants in the living world are …………….. .

6. Organisms that depend directly on autotrophs are known as …………. or ……….… .

7. Detritivores feed upon …………. of living things.

8. Each level in a food chain is called a …………….. .

Q. The science that deals with inter-relationship between various organisms and physical environment is called ____________.

Q. There are two basic branches of soil science, $\underset{–}{\left(i\right)}$ is concerned with the influence of soils on living things, particularly plants and $\underset{–}{\left(ii\right)}$ is focused on the formation, morphology and classification of soils in their natural environment. Select the option which correctly fills the blanks.

Q. Fill in the following blanks with suitable words :
(a) All green plants are ....................
(b) All non-green plants and animals are ....................
(c) Heterotrophs depend on .................... and other .................... for food.
(d) Green plants use .................... and .................... to make food.
(d) Iodine turns blue-black on reacting with ....................