60. Which of the following adaptations are observed in mangrove vegetation?
i) Prop and stilt roots
ii) Pneumatophores
iii) Vivipary
Options:
60. Which of the following adaptations are observed in mangrove vegetation?
i) Prop and stilt roots
ii) Pneumatophores
iii) Vivipary
Options:
The correct option is D d) All of the above
D) Explanation:
Prop and stilt roots: These are large pillar like roots developing from horizontally spread branches of a tree. They grow vertically downward and enter the soil.
Pneumatophores: Pneumatophores are erect roots that are some form of upward appendage or extension of the underground root system. Because these roots are exposed at least part of the day and not submerged underwater, the root system can obtain oxygen in an otherwise anaerobic substrate.
Vivipary : Vivipary is the condition whereby the embryo the young plant within the seed. grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant.
D)
Explanation:
Prop and stilt roots: These are large pillar like roots developing from horizontally spread branches of a tree. They grow vertically downward and enter the soil.
Pneumatophores: Pneumatophores are erect roots that are some form of upward appendage or extension of the underground root system. Because these roots are exposed at least part of the day and not submerged underwater, the root system can obtain oxygen in an otherwise anaerobic substrate.
Vivipary : Vivipary is the condition whereby the embryo the young plant within the seed. grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant.
