Chrysanthemum is an example of a short-day plant.

Important Questions on Plant Growth and Development

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Phytochrome is a:

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

What is the site of perception of photoperiod necessary for induction of flowering in plants?

HARD

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

A few normal seedlings of tomato were kept in a dark room. After a few days, they were found to have become white-colored like albinos, Which of the following terms will you use to describe them?

MEDIUM

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Would a defoliated plant respond to photoperiodic cycle? Why?

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Which of the following is day neutral plant?

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Select the odd one with respect to long-day plants.

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Both a short day plant and a long day plant can produce flower simultaneously in a given place. Explain.

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

In respect of photomorphogenesis plants are most sensitive to

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

There are two plants A and B with respective critical photoperiod of 13 hours and 11 hours. When they are exposed to light for a period of 12 hours, it initiated flowering in both. Which of the following conclusions is most appropriate for these plants?

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

The physiological response of plants to the duration of light and darkness is a

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Florigen is synthesised in

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Pigment phytochrome is involved in

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

An important blue colour absorbing pigment in plant is

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Which of the following factors influence the process of flowering?

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Day-neutral plants

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Which of the following induces flowering in short day plant?

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

When the dark period of short day plants is interrupted by a brief exposure of light, then the plant

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

The phytochrome $\mathrm{Pr}$ absorb light of wavelength:

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

Photoperiodic response of red and far-red wavelength is mediated by

EASY

Biology>Plant Physiology (Functional Organisation)>Plant Growth and Development>Photoperiodism

What helps in flowering?