Home
Class 11
BIOLOGY
Assertion: Floral initiation is done by ...

Assertion: Floral initiation is done by florigen.
`Reason Florigen is translocated from flowers to leaves.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C

Shoot apices of plants themselves cannot perceive photoperiods. The site of perception of light/dark is the leaves of plant. It has been hypothesized that there is a hormonal substance known as Florigen which is responsible for flowering.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : Leaf in Opuntia functions for the storage of sugars . Reason : Sugar is transported from leaves in Opuntia and gets stored in stem .

In the following questions, a statement of assertion (A) is followed by a statement of reason (R), Assertion: Transpiration cools leaf surface. Reason: Transpiration helps in translocation of sugar in plants

Assertion : Emasculation is removal of male parts. Reason : Bagging is not required for emasculated flowers.

Assertion :- Translocation is a illigal crossing over Reason : Translocation is exchange of chromosomal segments between nonhomologous chromosome

Assertion: Flower is aggregation of sporophylls. Reason: Sporophylls are modified in anglosperms.

Explain how branches and flowers arise from the axils of leaves.

Give reason: Emasculation is done in a flower which is selected as female parent.

Assertion :- Flowers are arranged in acropetal manner in cymose inflorescence. Reason :-All flowers are at the same level is cymose inflorescence.

Assertion: Eichhornia crassipes was introduced in India because of its beautiful flowers and shape of leaves. Reason: Water hyacinth propagate vegetatively at a phenomenal rate.

Assertion: It is possible to identify nodes on a a stem Reason: Leaves arise from the nodes of a stem