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Pneumatophores are...

Pneumatophores are

A

Positively geotropic

B

Plagio-geotropic

C

Diageotropic

D

Negatively geotropic.

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Which of the following statements is/are incorrect regarding roots? (i) In Rhizophora, pneumatophores are found. (ii) Tap roots of carrot, turnip and advertitious roots of sweet potato, get swollen and store food. (iii) The stems of maize and sugercane have supporting prop roots coming out of the lower nodes of the stem.

    A
    I and II
    B
    Only II
    C
    II and III
    D
    Only III

  • Select the incorrect statement/statements from the following A. 'Pneumatophores' are helpful in aerobic respiration B. Haustorial roots of striga collect only H,O and minerals from host C. 'Rafflesia' produces largest reproductive unit of Angiosperms D. Fasciculated tuberous roots are seen in 'Asparagus' E. Very short lived 'Primary root'is seen in both Dicots and Monocots

    A
    E alone
    B
    B, C and E
    C
    A, B, C and E
    D
    A, B, C, D, E

  • Pneumatophores help

    A
    To get `CO_(2)` for photosynthesis
    B
    To get `O_(2)` for photosynthesis
    C
    To get `CO_(2)` for respiration
    D
    To get `O_(2)` for respiration

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    Assertion:Avicennie has pneumatophores. Reason:Pneumatophores help the plant to get oxygen for respiration.

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    Read the given statements and select the correct ones. (i) Root caps are present in prop roots. (ii) Pneumatophores helf to get oxygen for respiration. (iii) Edible part of ginger is underground stem. (iv) Hydrophytes usually possess a well developed root system.

    What is the role of Pneumatophores ?

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