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Environmental Science Worksheet-5

Environmental Science Worksheet-5

 

  1. How do plants get nitrogen in the nitrogen cycle?

(a) By photosynthesis

(b) By eating other plants

(c) By absorbing it from the soil

(d) By absorbing it from the air

 

  1. In what form does the nitrogen stays in the soil?

(a) As pure nitrogen molecules

(b) As nitrogen carbide

(c) As a nitrogen containing substances called mineral

(d) As a nitrogen containing substances called nitrates

 

  1. What is the state of material in the Mantle layer?

(a) Liquid                                       (b) Solid            

(c) Semi-solid (like putty)          (d) None of the above

 

  1. What is the state of material deep below the Earth's surface?

(a) Hot solid rocks                       (b) Hot molten rocks

(c) Cold frozen rocks                   (d) Molten gases

 

  1. Select the correct definition of the Food Chain.

(a) A system of feeding in animals.

(b) A system of feeding in plants.

(c) The transfer of light energy from the Sun to the Earth.

(d) The transfer of food energy from the source in plants through a series of animals.

 

  1. What is the first source of energy in an ecosystem?

(a) The Sun       (b) The Moon   (c) The Earth    (d) The Forest

 

  1. Minerals are _______ resources.

(a) renewable                                (b) nonrenewable

(c) highly renewable                    (d) expandable

 

  1. Which ore gives us aluminum?

(a) Bauxite        (b) Hematite     (c) Granite         (d) Magnetite

 

  1. What is a tropism?

(a) A coloring and bending of a root, in response to an environmental stimulus.

(b) A growth or turning movement of a plant, in response to an environmental stimulus.

(c) A growth hormone in a plant.

(d) A toxin in plant leaves.

 

  1. Downward root growth of a plant in response to the gravity is called _______.

(a) Growthtropism                       (b) Phototropism

(c) Hydrotropism                         (d) Gravitropism

 

Answer Key:

(1)–(c); (2)–(d); (3)–(c); (4)–(b); (5)–(d); (6)–(a); (7)–(b); (8)–(a); (9)–(b); (10)–(d)