Pencils are prepared from the wood of
Pinus vinaster
Juniperus virginiana
Chamaecyparis piscifera
Abies pindrow
B.
Juniperus virginiana
Juniperus virginiana wood is used for making pencils.
Pinus vinaster wood is used for carpentry items such as furniture, window frames, floors, roofing etc.
Chamaecyparis piscifera is used as a material for builiding palaces,temples, shrines and baths.
Abies pindrow is used for curing Respiratory ailments like Asthma.
Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.
Reason: Secondary metabolites can be commercially produced by using tissue culture technique.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Identify the incorrect statement about ABA growth regulator
It increases the tolerance of plants against different stresses.
It acts as general plant growth inhibitor and inhibitor of metabolism.
It helps in seed maturation and dormancy.
It promotes morphogenesis and differentiation of shoots.
Which of the following is a day neutral plant
Helianthus annuus
Euphorbia pulcherrima
Avena sativa
Beta vulgaris
