Q. No.
Some plants of arid regions have which of the following modification?
(1) Flattened stem-Opuntia
(2) Underground stem-Potato
(3) Thorn-Citrus
(4) Tendril- Grapevine
Which of the following has chlorophyll in their stem to carry out photosynthesis?
(1) Opuntia
(2) Citrus
(3) Bougainvillea
(4) Cucumber
Which of the following has chlorophyll in it's flattened stem to carry out photosynthesis?
(1) Opuntia
(2) Euphorbia
(3) Citrus
(4) Watermelon
Stem spreads to new niches and when older parts die new parts are formed.
(1) Grass
(2) Strawberry
(3) Mint
(4) All of these
Find the one which doesn't belong to the above category.
The stem of Pistia and Eichhornia has
(1) Short internode
(2) Rosette of leaves
(3) Tuft of Roots
(4) All of these
Aquatic plants with a lateral branch having short internodes, rosette of leaves and tuft of roots are
(1) Pistia, Hydrilla
(2) Eichhornia, Hydrilla
(3) Pistia and Eichhornia
(4) Hydrilla and Valisnaria
The lateral branches originate from the basal and underground portion of the main stem, grow horizontally beneath the soil and then come out obliquely upward to give rise to leafy shoot?
Which of the following examples are associated with such modifications?
(1) Banana, Mint and Jasmine
(2) Banana, Pineapple, Chrysanthemum
(3) Pineapple, Mint, Citrus
(4) Papaya, Citrus, Banana
Leaves
(1) Arranged in acropetal manner
(2) Most important reproductive organ in plants
(3) Important for photosynthesis
(4) A typical leaf has three main parts- leaf base, Petiole and lamina
Find the incorrect statement.
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