Question

How many statements are true 1) Rice is a short day plant 2) IAA and NAA are generally called stress hormone 3) 2, 4, D is a naturally occuring cytokinin 4) Environmental rhythms of light and darkness produce photoperiodism 5) ABA plays an important role in seed development, maturation and dormancy

Answer 1

Answer:

3

Explanation:

IAA AND NAA are auxins --- prompting

2,4D is  artificial auxin

Answer 2

Three statements are true.

The true statements are 1) Rice is a short-day plant, 4) Environmental rhythms of light and darkness produce photoperiodism, and  5) ABA plays an important role in seed development, maturation and dormancy.

• Short-day plants require a lesser exposure to daylight than the critical photoperiod. Rice and Coffee are short-day plants.
• IAA and NAA are natural forms of the phytohormone Auxin.
• Abscisic acid (ABA) helps plants survive harsh conditions, thus it is also called the Stress Hormone.
• 2,4-D is a type of auxin.
• When periods of light and dark affect the tendency of a plant to flower, it is called photoperiodism.
• ABA performs a vital function in seed development, maturation, and dormancy.