Model Paper 8 — NEET STD 11 Science — Question

In following, which sentence is correct?

Which one of the following generally acts as an antagonist to gibberellins?

The best example of polyembryony is

The blood concentration of glucose in a normal healthy individuals is....

According to Alexander von Humboldt

Choose correct statement for cytokine and mark correct option :
(i) It is a simple gaseous PGR.
(ii) It synthesised in large amounts by tissues undergoing senescence and ripening fruits.
(iii) Influences of it on plants include horizontal growth of seedlings, swelling of the axis and apical hook formation in dicot seedlings.
(iv) It promotes senescence and abscission of plant organs especially of leaves and flowers.
(v) It synthesised in regions where rapid cell division occurs, for example, root apices, developing shoot buds, young fruits, etc.
(vi) It helps to produce new leaves, chloroplasts in leaves, lateral shoot growth and adventitious shoot formation.
(vii) It help overcome the apical dominance.
(viii) They promote nutrient mobilisation which helps in the delay of leaf senescence.

Symbiosis of fungi with root of pinus is known

Arrange the following in proper sequence as occurring in z-scheme :
(1) Excitation of electrons of PS-II.
(2) Down hill transfer of electrons to PS-I.
(3) Excitation of electrons and transfer to another acceptor.
(4) Uphill transfer of electrons to acceptor.
(5) Down hill transfer of electrons causing NADP⁺ to reduce into NADPH+H⁺.