Tamil Nadu (English Medium) Plus 1 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1 Which of the following plants develop characters of xerophytes?

(A) Heliophytes	(B)Sciophytes
(C)Hydrophytes	(D)Halophytes

Question-2
Lichen is the pioneer vegetation in which succession?

(A) Hydrosere	(B) Lithosere
(C) Psammosere	(D) Xerosere

Question-3 Standing crop refers to

(A) all the photosynthetic living forms in an area	(B)all the living matter in a an area
(C)the amount of living matter in a component population of an ecosystem at any time	(D)all the crop plants in an area

Question-4 Pyramid of energy in ecosystem is

(A) always upright	(B)always inverted
(C)mostly upright	(D)mostly inverted

Question-5 Most diverse organisms of an ecosystem are

(A) producers	(B)consumers
(C)carnivores	(D)decomposers

Question-6 Littotal zone is located along the

(A) high mountains	(B)sea
(C)rivers	(D)desert

Question-7 Identify the plant belonging to the reed-swamp stage in hydrarch succession.

(A) Juncus	(B)Sagittaria
(C)Salix	(D)Trapa

Question-8 The sequence of communities showing a gradual change in composition is called

(A) continuum	(B)bio indicator
(C)succession	(D)pyramid of number

Question-9 Actively moving organisms in aquatic ecosystem are

(A) nekton	(B)benthos
(C)viruses	(D)none of these

Question-10 When the two ecosystem overlap each other, the areas is called

(A) habitat	(B)niche
(C)ecotone	(D)ecotype

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Plus 1 Biology Science

Tamil Nadu (English Medium)

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