Lichens are often the first organisms to colonize bare rock. What is their role in primary succession?
Soil formation
Seed dispersal
Providing shade
Preventing erosion
Related Questions
All of the following can be adaptations of xerophytes, except
Thick cuticle on leaves
Sunken stomata
Poorly developed roots
Scotoactive stomata
All of the following can be adaptations of xerophytes, except
Thick cuticle on leaves
Sunken stomata
Poorly developed roots
Scotoactive stomata
A forest fire destroys a large area of vegetation. What type of succession will follow?
Secondary succession
Primary succession
Climax succession
Progressive succession
Which of the following is a characteristic of the early stages of ecological succession?
High species diversity
Complex food webs
Dominance of r-selected species
Stable climax community
In which of the following, root system is poorly developed?
Phaene
Hydrilla
Halophyte
Xerophyte
Go through the following pairs and choose the correct pairs from the option given below
I. Nerium Sunken lower epidermis of leaves to stomata reduces loss of water
II. Calotropis Non-succulent Root cells with thickened
cell walls
III. Peperomia Leaf succulent Leaf epidermal cell, store
water
IV. Ammophila Dicot Curl their leaves to minimise loss of water
V. Tribulus Ephemeral Water is stored in stem
I and III
II and IV
I, III and IV
II, IV and V
Aerenchyma is helpful in plants by
Providing buoyancy in hydrophytes
Absorption in stilt roots
Giving mechanical strength to plants
Giving flexibility to plants
Sunken stomata are usually found in the leaves of
Xerophytes
Hydrophytes
Mesophytes
Sciophytes
The inhibition model of succession proposes that:
Early species facilitate the establishment of later species.
Later species outcompete early species for resources.
Early species inhibit the establishment of later species.
Environmental conditions determine which species can colonize.
Which type of succession occurs after a forest fire?
Primary succession
Secondary succession
Tertiary succession
Climax succession
