STD 11 - 5. Morphology flowering plants — NEET STD 11 Science — Question

A high concentration of synthetic auxin is generally used for

Which of the following pigment is present in cyanobacteria?

Genetic code is called degenerative:

Select the example of locomotion
a. Walking
b. Running
c. Movement of eyes
d. Movement of tongue
e. Climbing

Most widely used compound as a source of ethylene is

What is the similarity between gymnosperms and angiosperms

Select incorrect statement (w.r.t. artificial hybridisation)

Which one of the following statements are correct ?
(A) In all of the higher plants, the growing apical bud inhibits the growth of the lateral buds, a phenomenon called apical dominance.
(B) Decapitation usually results in growth of lateral buds.
(C) 2,4-D is widely used to kill dicotyledonous weeds, does not affect immature monocotyledonous plants.
(D) Auxin controls xylem differentiation and helps in cell division.
(E) GA₃ was one of the first gibberellins to be discovered and remains the most intensively studied form.
(F) Gibberellins cause fruits like apple to elongate and improve its shape.
(G) GA₃ is used to speed up the malting process in brewing industry.
(H) Gibberellin promotes bolting in beet, cabbages and many plants with rosette habit.
(I) Cytokinins have specific effects on cytokinesis, and were discovered as kinetin from the autoclaved herring sperm RNA.
(J) Cytokinins help to overcome the apical dominance.
(K) Influence of Ethylene on the plants includes horizontal growth of seedlings, swelling of the axis and apical hook formation in monocot seedlings.
Choose the correct option given below :-

Amongst plants which one of the following group has been classified on the basis of pigments