#flowering and day length

PHOTOPERIODISM+PYQS

Long-short day plants flower after:

That points to C: Sequence of long days followed by short days. Compared with the other options, Sequence of long days followed by short days is the one that correctly describes the PHOTOPERIODISM concept. The wrong ones are A) Only long days; B) Only short days; D) Random photoperiod. 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.

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PHOTOPERIODISM+PYQS

Which of the following is a short day plant?

Go with C — Rice. 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) Wheat; B) Barley; D) Pea. 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.

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PHOTOPERIODISM+PYQS

Which of the following is a long day plant?

Go with C — Wheat. 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) Rice; B) Maize; D) Potato. 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.

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PHOTOPERIODISM+PYQS

Day neutral plants are those which:

Go with B — Flower irrespective of photoperiod. 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) Require equal day and night; C) Require long nights; D) Require short nights. 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.

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PHOTOPERIODISM+PYQS

Plants that require day length shorter than critical photoperiod for flowering are:

Correct option is B, Short day plants. In PHOTOPERIODISM problems like this, the accurate statement is Short day plants; the others are common mix-ups. Not these: A) Long day plants; C) Day neutral plants; D) Annual plants. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.

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

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PHOTOPERIODISM+PYQS

Critical photoperiod refers to:

Answer: B) Definite day length beyond or below which flowering does not occur. 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) Minimum light required for photosynthesis; C) Total duration of sunlight in a year; D) Length of vegetative phase. 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.

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PHOTOPERIODISM+PYQS

The phenomenon of photoperiodism was first reported by:

Correct option is B, Garner and Allard. In PHOTOPERIODISM problems like this, the accurate statement is Garner and Allard; the others are common mix-ups. Not these: A) Darwin; C) Bünning; D) Went. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.

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

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