#phytochrome

PHYTOCHROME+PYQS

Phytochrome is a photoreceptor that primarily absorbs:

That points to C: Red and far-red light. Compared with the other options, Red and far-red light is the one that correctly describes the PHYTOCHROME concept. The wrong ones are A) Blue light; B) Green light; D) UV-B light. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

View Details

PSS-Sec-E-Sensory biology

Which phytochrome form is physiologically active?

That points to B: Pfr. Compared with the other options, Pfr is the one that correctly describes the PSS-Sec-E-Sensory biology concept. The wrong ones are A) Pr; C) Both; D) Neither. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

View Details

PHOTOPERIODISM+PYQS

Exposure to far-red light reverses the effect of:

B fits best: Red light. Keep the PHOTOPERIODISM basics straight and Red light stands out as the precise answer. Avoid: A) Blue light; C) UV light; D) Green light. Light and flowering items often hinge on which photoreceptor or day-length rule is in play.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

View Details

PHOTOPERIODISM+PYQS

Which form of phytochrome is biologically active?

Go with B — Pfr. Under PHOTOPERIODISM, this is the standard explanation you’d use in class: it names the real driver or definition, while the rest are nearby but wrong. Not these: A) Pr; C) Both; D) None. When two options sound similar, choose the one that matches the textbook definition most tightly.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

View Details

PHOTOPERIODISM+PYQS

The photoreceptor involved in photoperiodism is:

Answer: C) Phytochrome. For PHOTOPERIODISM, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Chlorophyll; B) Carotenoid; D) Cryptochrome. Name the process first, then pick the option that describes it — don’t reverse cause and effect.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

View Details