Leaves are modified into spines and stems become fleshy and flattened to carry out photosynthesis. Such modified stem is present in:
Important Questions on Morphology of Flowering Plants
Identify the modified structure in the given figure.
The underground stem of some plants such as grasses, strawberry is concerned with
(a) Perennation.
(b) Vegetative propagation.
(c) Moisture absorption.
(d) Food assimilation.
(e) Spread to new niches.
Select the option that is correct for the description of subaerial modification.
(a) A slender lateral branch arises from the base of the main axis and, after growing aerially for some time, arches downwards to touch the ground.
(b) A lateral branch originates from the basal and underground portion of the main stem, grows horizontally beneath the soil, and comes out obliquely upwards, giving rise to a leafy shoot.
The type of sub-aerial stem modification depicted in the following diagram is present in
Match the following according to the form of stem.
|
Column – I |
Column – II |
|
a. Eichhornia |
(i) Sucker |
|
b. Pineapple |
(ii) Runner |
|
c. Mint |
(iii) Offset |
|
d. Grasses |
(iv) Stolon |
Which of the following statement is/are correct about palmately compound leaves?
(a) Possess bud in the axile of leaflets.
(b) Possess a number of leaflets attached laterally on the rachis.
(c) Have leaflets attached at a common point, i.e. at the tip of petiole.
(d) Are present in neem.
