Neet Bio 💃 Flashcards
Name three biennial plants.
Sugar beet cabbage carrot
Vernalisation is shown by _____ plants
Biennial plants
Name three important food plants having two varieties winter and spring.
Wheat Rye barley
Site of perception of light/ dark in plants are
Leaves
In plants were there is no correlation between duration of Sunlight exposure and induction a flowering response are called
Day neutral plants
Hormone playing an important in seed development maturation and dormancy is
ABA
Aba stimulates – of stomata
Closure
Aba inhibits _ and _
Plant metabolism and seed germination
Pgr inhibitor
Abscissc acid
In cucumber ethylene promotes
Female flowering
The type Ethylene hastening fruit ripening in tomatoes and apple is
Ethepon
Widely used pgr in agriculture
Ethylene
Flowering in mango is induced by pgr
Ethylene
Ethylene initiate flowering and synchronises fruit set in
Pineapples
Ethylene Promotes root growth and root hair formation by increasing their
Surface area
Pgr involved in Sporting a Potato Tuber is
Ethylene
Ethylene promotes Rapid ____ in deep water rice plant
Internode / Petiole elongation
Ethylene initiate germination in
Peanut seeds
Ethylene Promotes fruit ripening by enhancing the
Respiration rate
Ethylene promotes senescence and abscission of
Leaves and flowers
Horizontal growth of seedlings, swelling of the axis is promoted by
Ethylene
Apical hook formation in Dicot seedlings is promoted by
Ethylene
Cytokinins promotes nutrient mobilization which help in the delay of
Leaf senescence
The hormone that helps overcome apical dominance
Cytokinins
The plant growth hormone that help in the production of new leaves, chloroplast lateral shoot growth and adventitious shoot formation
Cytokinins
Bolting in beet and cabbage is can be induced by application of
gibberellins
Process of internode elongation just prior to flowering is called
Bolting
Gibberellins can induce early seed production in
Conifers
The plant growth hormone used to delay senescence and speed up the malting process is
Gibberellins
Auxin is responsible for controlling differentiation of which vascular tissue
Xylem
Auxin used to kill dicot weeds
2 4-d
Technique widely applied in tea plantation and hedge making it
Decapitation
Auxin promote flowering in which fruit
Pineapples
Auxin was first isolated from
Human urine
The presence of Ethylene was first confirmed by
H. H Cousins
Cytokinesis promoting active substance discovered by Miller was termed
Kinetin
Auxin was isolated by which scientist from tips of coleoptile of oat seedlings
F. W Went
The discovery of plant growth hormone started with the observation of Charles Darwin and his son on unilateral illumination of ____ by growing towards light source
Coleoptile
The plant growth hormone playing an important role in plant responses to wounds and stresses of biotic and abiotic origin is
Aba
Gaseous plant growth regulator with inhibits growth activities is
Ethylene
Plant growth hormone composed of terpenes is
Gibberellic acid
Plant growth hormone which is a derivative of carotenoid is
Aba
Name extrinsic factors affecting plant development
Light temperature water oxygen nutrition
Plant Development is considered as the sum of its
Growth and differentiation
In buttercup difference in shapes of leaves produced in air and in water is an example of
Heterophylly / plasticity
The process the includes all changes thatan organism goes through during its life cycle from germination of the seed to senescence iscalled
Development
The cells positioned away from root apical Meristem differentiate as
Root cap cells
During dedifferentiation when meristems are able to divide and produce cells that once again lose capacity to divide but then mature to perform specific function is known as
Redifferentiation
Formation of interfascicular cambium from parenchyma cells is an example of
Dedifferentiation
Formation of cork cambium
Dedifferentiation
The living differentiated cells that have lost the capacity to divide can regain the capacity of division under certain condition the process is called
Dedifferentiation
Secondary cell walls of tracheary elements are composed of
Lignocellulose
In order to form a tracheary element cell will lose its
Protoplasm
The living differentiated cells that have lost the capacity to divide can regain the capacity of division under certain conditions called as
Dedifferentiation
An example of dedifferentiation in plants is
Formation of cotk cambium
Formation of interfascicular cambium from parenchyma cells is an example of
Dedifferentiation
During dedifferentiation when meristems are able to divide and produce cells that once again lose capacity to divide but then mature to perform specific functions is known as
Redifferentiation
The cells positioned away from root apical Meristem differentiate as
Root cap cells
The process that includes all changes that an organism goes through during its life cycle in germination of the seed to senescence is called
Development
The ability of plants to follow different pathways in response to environment or phases of life to form different kinds of structures is called
Plasticity
In buttercup the difference in shapes of leaves produced by air and in water is an example of
Heterophylly or plasticity
Plant development is considered as the sum of its
Growth and differtiation
Name three extrinsic factors affecting plant development
Light temperature water oxygen nutrition
Pgr stands for
Plant growth regulators
An indole containing pgr is
Indole 3 acetic acid
A pgr with adenine derivative is
Kinetin or N6 furfurylamino purine
A PGR which is derivative of carotenoid is
Abscisic acid
PGR composed of terpenes is
Gibberllic acid
Name a gaseous PGR
Ethylene
The PGRs which are involved in growth promoting activities are called
Plant growth promoters
A gaseous plant growth regulator which inhibits growth activities is
Ethylene
The pgr playing an important role in plant responses to wounds and stresses of biotic and abiotic origin is
Abscissc acid
Discovery of pgr started with observations of Charles Darwin and his son on Unilateral illumination of _____ by growing towards light source
Coleoptile
Auxin was isolated by which scientist from the tips of coleoptiles of oat seedlings
FW Went
The bakanae(foolish seedling) disease of rice seedlings was caused by a fungal pathogen
Gibberella fujikuroi
The active substances held responsible for causing bakanae in rice seedlings was
Gibberelibs
Cytokinesis promoting active substance discovered by Miller was termed
Kinetin
Inhibitor B, abscission ll and dormin were identified chemically same and namef as
Abscisic acid
The process of the ethylene was first confirmed by
H.H cousins
The process of maturation of cells derived from a meristems and cambium to perform specific functions is called
Differentation
The two environmental signals that affect certain phases plan growth are
Light and gravity
____ are required by plants for energy and synthesis of Protoplasm
Nutrients
