| ⇦ | 
| ⇨ |
The plant responds to photoperiods due to the presence of
Options
(a) phytochromes
(b) stomata
(c) enzymes
(d) phytohormones
Correct Answer:
phytochromes
Explanation:
Phytochrome is a pigment involved in the perception of photoperiodic stimuli controlling flowering, lettuce seed germination and other morphogenetic phenomenon. The phytochrome exists in two forms : the phytochrome red absorbing form (Pr) and the phytochrome far-red absorbing form (Pfr).Scientist consider the Pfr form to be the physiologically active form. Phytochrome is a blue-green pigment existing in two interconvertible forms. One form Pfr or P₇₃₀ absorbs far-red light and the other Pr or P₆₆₀ or P₆₈₀ a
Related Questions: - Most abundant water insoluble polysaccharide of plant cell wall is
- The breaking of haemoglobin into heme and globin takes place in
- Which of the following joints would allow no movement?
- In anaerobic respiration the pyruvic acid in muscle will form
- Autonomic nervous system affects
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Most abundant water insoluble polysaccharide of plant cell wall is
- The breaking of haemoglobin into heme and globin takes place in
- Which of the following joints would allow no movement?
- In anaerobic respiration the pyruvic acid in muscle will form
- Autonomic nervous system affects
Topics: Plant Growth and Development (126)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply