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Multiple Choice Questions on Ecological Succession


1. Ecological  succession on sand is
A)xerosere
B) psammosere
C)hydrosere
D)halosere

2. Lichen is the pioneer vegetation on which succession?
A)Hydrosere
B)Lithosere
C)Psammosere
D)None of these

3. Last stable community in succession dependent on climate is
A)seral community
B)climax community
C)both a and b
D)none of these
Multiple Choice Questions on Ecological Succession

4. Both hydrarch and xerarch succession lead to
A)highly dry conditions
B) xeric conditions
C)excessive wet conditions
D)medium water conditions

5.  Reed swamp state is seen in
A)Xerosere
B)Psammosere
C)Hydrosere
D)Lithosere

6. A climax community
A)is self-sustaining
B)is never changing
C)show growth proceeding in a predictable pattern
D)is not likely to be disturbed by localized climatic changes

7. Which of the following is  a characteristic of an early seral community
A)Narrow niche specialization
B)high species diversity
C)low community production
D)open mineral cycling

8. The type of plant succession in which lichens form a component is
A)Hydrosere
B)Psamosere
C)Halosere
D)Lithosere

9. The several stages of hydrosere along with suitable examples are given. Indicate  the correct matches for them
I. Plank stage- Diatoms
II. Woodland stage- Juncus
III. Floating stage- Nymphaea
iv. Submerged stage- Hydrilla
v.Reed swamp stage- Sagittaria

A) I, II, III, and IV
B) I, III, IV and V
C) I, II, IV and V
D)  I, II, III and V
 10. Match the following and select the correct option.
A
EartVhworm
i
Pioneer species
B
Succession
ii
Detritovore
C
Ecosystem service
Iii
Natality
D
Population growth
iv
Pollination

A) A –i, B-ii, C-iii, D-iv
B) A –iv, B-ii, C-iii, D-ii
C) A –iii, B-ii, C-iv, D-i
D) A –ii, B-i, C-iv, D-iii
Answers:
1. B) psammosere
2. B)Lithosere
3. B)climax community
4. D)medium water conditions
5. C)Hydrosere
6. B)is never changing
7. D)open mineral cycling
8. D)Lithosere
9.  B)I, III, IV and V
10. D) A –ii, B-i, C-iv, D-iii
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