HARD
Earn 100
Read the following statement A to D.
(A) An ecosystem can be visualised as a functional unit of nature.
(B) Ecosystem varies greatly in size from a small pond to a large forest or a sea.
(C) Many ecologists regard the entire biosphere as a global ecosystem
(D) Crop field & an aquarium may also be considered as natural ecosystem
How many of the above statements are correct.
50% studentsanswered this correctly
Important Questions on Ecological Adaptations, Succession and Ecological Services
HARD
Assertion (): A primary succession is more common than secondary succession.
Reason (): Biogeochemical cycling is absent in secondary succession.
EASY
A violent volcanic eruption wiped out most of the life forms in an island. Over different forms of simple organisms colonised this region, followed by the emergence of other organisms such as shrubs, woody plants, invertebrates and mammals. This ecological process is referred to as
EASY
In hydroseric succession, which stage comes just before sedge meadow stage?
MEDIUM
Match the following?
| Column I | Column II | ||
| (a) | Predictable change in species composition | (i) | Equilibrium |
| (b) | Climax community | (ii) | Seral stages |
| (c) | Entire sequence community | (iii) | Ecological succession |
| (d) | Transitional community | (iv) | Sere |
| (v) | Succession | ||
EASY
Secondary succession takes place on/in:
EASY
During ecological succession
EASY
Ecological succession is
MEDIUM
Define ecological succession.
EASY
The organisms which invade a bare area to initiate an ecological succession are known as
MEDIUM
Choose the incorrect statements.
A) Pollinators play significant role in the production of food crops.
B) One of the threats to pollinators is habitat destruction by land use.
C) The climax community remain stable as long as environment is changing with adoptions.
D) Secondary succession will be a slow process compared to the primary succession.
MEDIUM
Give reasons for the following:
Climax stage is achieved quickly in secondary succession as compared to primary succession.
EASY
Select the incorrect statement with reference to ecosystem service release?
HARD
What is the difference between hydrarch succession and xerarch succession.
EASY
Secondary succession takes place on / in
EASY
What is pioneer species?
EASY
Write a short note on ecosystem services.
EASY
What is Ecological succession? How Hydrarch succession is different from Xerarch succession?
MEDIUM
Match the following lists:
| List- | List- | ||
| (A) | Rooted hydrophyte with floating leaves | (I) | Limnophila |
| (B) | Submerged suspended hydrophyte | (II) | Vallisneria |
| (C) | Free floating hydrophyte | (III) | Utricularia |
| (D) | Amphibious plant | (IV) | Victoria regia |
| (V) | Salvinia |
The correct match is:
MEDIUM
During ecological succession:
EASY
Fill up the blanks with suitable words.
Ecosystem services are ____ understood. The value of ecosystem is larger than ____. Many of these services are ____ services and cannot be ____ by anyone. The ecosystem value is nearly ____ the globes GNP. The ecosystem services are delivered by ____.
A. Living stuff.
B. Poorly
C. Twice
D. Non-market
E. Global economy.
F. Owned
