STD 11 - 3. Plant kingdom — NEET STD 11 Science — Question

When both sexes are absent from a flower or are non-functional, the flower is said to be

Different growth phases results in a

Which of the following combinations is required for chemiosmosis?

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.

Seed dormancy is due to the

Assertion : In fabaceae family monocarpellary, unilocular ovary is present

Reason : In fabaceae, placentation is parietal

Growth period of plant is generally divided into