PLANT PARTS AND ITS FUNCTION Flashcards
the function of this system are absorption of water and
minerals from the soil, providing a proper anchorage to the plant parts, storing
reserve food material and synthesis of plant growth regulators.
The Roots
In majority of the dicotyledonous plants, the direct elongation of
the ____ leads to the formation of primary root which grows inside the soil.
radicle
The primary roots and its branches constitute the_________
tap root system.
In monocotyledonous plants, the primary root is short lived and is
replaced by a large number of roots. These roots originate from the base of the
stem and constitute the _________
fibrous root system.
In some plants, roots arise from parts of the plant other than the radicle
and are called _______
adventitious roots.
The root is covered at the apex by a thimble-like structure called ______
root cap
Hanging structures that support a banyan tree are called______
prop roots.
Similarly, the stems of maize and sugarcane have supporting roots
coming out of the lower nodes of the stem. These are called________
stilt roots.
In some plants such as Rhizophora growing in swampy areas, many
roots come out of the ground and grow vertically upwards. Such roots,
called_______
pneumatophores
one of two structural parts of a vascular plant (a plant
that has tissues for moving water and nutrients), the other being the root. The
stem is the part above ground which provides support for leaves and buds. It’s
like the major highway of a plant, and it’s vital for plant life.
The Stem
The region of the stem where leaves are born are called _____
nodes
____ are the portions between two nodes.
internodes
_____ which develop from axillary buds, are slender and
spirally coiled and help plants to climb such as in gourds (cucumber, pumpkins,
watermelon) and grapevines.
Stem tendrils
Axillary buds of stems may also get modified into woody, straight
and pointed ____. They protect plants from browsing animals.
thorns
Some plants of arid regions modify their stems into flattened ___
Opuntia
Some plants of arid regions modify their stems into fleshy cylindrical
Euphorbia
a flattened structure of a higher plant, typically green and bladelike, that is attached to a stem directly or via a stalk.
Leaf
where does Leaves originates?
shoot apical meristems
it help hold the blade to light. Long thin flexible
petioles allow leaf blades to flutter in wind, thereby cooling the leaf and
bringing fresh air to leaf surface.
The petiole
____ or the leaf blade is the green
expanded part of the leaf with veins and veinlets.
The lamina
The arrangement of veins and the veinlets in the lamina of leaf is termed ____
Leaf Venation
the reproductive unit in the angiosperms. It is meant for
sexual reproduction.
The Flower
A sterile stamen is called_____
staminode
the female reproductive part of the flower and is made up
of one or more carpels.
Gynoecium
