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#botany exam practice

3 public questions tagged with this topic.

The Pfr form of phytochrome absorbs maximally at approximately:

Pick D: 730 nm. Thinking through PHYTOCHROME step by step rules out the lookalikes and leaves 730 nm. Skip these: A) 450 nm; B) 550 nm; C) 660 nm. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.

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

In ABC model, class B genes specify:

B fits best: Petal and stamen identity. Keep the PSS-Sec-E-Sensory biology basics straight and Petal and stamen identity stands out as the precise answer. Avoid: A) Sepal identity; C) Carpel identity; D) Ovule identity. 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.

In ABC model of floral development, gene expressed in all four whorls is:

The right choice is B: AP2. In PSS-Sec-E-Sensory biology, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) AP1; C) AP3; D) AG. A quick check: if an option needs energy, pumps, or the opposite direction of movement, ask whether that really applies.

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