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#botany practice questions

10 public questions tagged with this topic.

Which phototropin mainly controls chloroplast avoidance response?

That points to B: PHOT2. Compared with the other options, PHOT2 is the one that correctly describes the Phototropin+All concept. The wrong ones are A) PHOT1; C) CRY1; D) ZTL. 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.

Phototropins regulate which of the following processes?

That points to D: All of the above. Compared with the other options, All of the above is the one that correctly describes the Phototropin+All concept. The wrong ones are A) Phototropism; B) Chloroplast movement; C) Stomatal opening. 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.

Autophosphorylation of phototropin occurs on:

The right choice is C: Serine residues. In Phototropin+All, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Tyrosine residues; B) Histidine residues; D) Aspartate residues. 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.

The gene NPH1 was later renamed as:

Pick C: PHOT1. Thinking through Phototropin+All step by step rules out the lookalikes and leaves PHOT1. Skip these: A) PHOT2; B) CRY1; D) ZTL. 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.

Phototropins are plant photoreceptors sensitive to:

Pick C: Blue light. Thinking through Phototropin+All step by step rules out the lookalikes and leaves Blue light. Skip these: A) Red light; B) Far-red light; D) UV-B light. 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.

CRY1 protein stability in blue light is:

The right choice is C: High. In cryptochrome, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Very low; B) Moderate; D) Absent. 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.

Cryptochromes belong to which class of proteins?

That points to B: Flavoproteins. Compared with the other options, Flavoproteins is the one that correctly describes the cryptochrome concept. The wrong ones are A) Glycoproteins; C) Lipoproteins; D) Metalloproteins. 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.

Phytochrome is classified as which type of protein?

Pick B: Chromoprotein. Thinking through PHYTOCHROME step by step rules out the lookalikes and leaves Chromoprotein. Skip these: A) Flavoprotein; C) Lipoprotein; D) Glycoprotein. 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.

Attempts to chemically isolate vernalin have so far been:

Pick C: Unsuccessful. Thinking through VERNALIZATION & FLOWERING step by step rules out the lookalikes and leaves Unsuccessful. Skip these: A) Highly successful; B) Partially successful; D) Conclusive. 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.

UVR8 lacks which component?

That points to B: Chromophore. Compared with the other options, Chromophore is the one that correctly describes the PSS-Sec-E-Sensory biology concept. The wrong ones are A) Dimer structure; C) Tryptophan residues; D) β-propeller fold. 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.