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
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
