Thorns develop from
(1) Axillary buds
(2) Terminal buds
(3) Leaves
(4) Phyllode
The characteristic of thorns are
(1) Herbaceous, coiled and slender
(2) Woody, straight and pointed
(3) Herbaceous, straight and slender
(4) Woody, coiled and pointed
The following modification of stem is used in protection from browsing animals-
(1) Tendril
(2) Node
(3) Thorn
(4) Fleshy cylinder
Which of the following is not a stem modification?
(1) Turnip
(2) Citrus
(3) Bougain villea
(4) Grapevines
Thorn is not found in
(1) Citrus
(2) Bougainvillea
(3) Cucumber
(4) Both 1 and 2
Stem tendril is not found in
(1) Cucumber
(2) Pumpkins
(3) Watermelon
(4) Citrus
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.