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ABCE & ABCDE MODEL +Synapdrgon flowering

Questions focused on advanced genetic models explaining flower development, including the roles of additional genes beyond the ABC model. Useful for plant biology exam prep.

30 questions

Peloria mutant of Linaria is caused due to inactivation of:

That points to C: CYCLOIDEA. Compared with the other options, CYCLOIDEA is the one that correctly describes the ABCE & ABCDE MODEL +Synapdrgon flowering concept. The wrong ones are A) DIV; B) RAD; D) AG. 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.

Mutation in CYCLOIDEA gene leads to:

Correct option is B, Radial symmetry. In ABCE & ABCDE MODEL +Synapdrgon flowering problems like this, the accurate statement is Radial symmetry; the others are common mix-ups. Not these: A) Bilateral symmetry; C) Extra petals; D) Loss of sepals. 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.

RAD represses which gene to control ventral identity?

Pick C: DIV. Thinking through ABCE & ABCDE MODEL +Synapdrgon flowering step by step rules out the lookalikes and leaves DIV. Skip these: A) CYC; B) DICH; D) SEP. 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.

RADIALIS (RAD) gene encodes a transcription factor of family:

Answer: B) MYB. For ABCE & ABCDE MODEL +Synapdrgon flowering, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) bHLH; C) MADS-box; D) AP2. 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.

Loss of LFY gene results in:

That points to B: Conversion of flowers to inflorescences. Compared with the other options, Conversion of flowers to inflorescences is the one that correctly describes the ABCE & ABCDE MODEL +Synapdrgon flowering concept. The wrong ones are A) Extra petals; C) Only carpels; D) Early flowering. 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.

Which gene is Arabidopsis homolog of Antirrhinum FLO?

Correct option is B, LFY. In ABCE & ABCDE MODEL +Synapdrgon flowering problems like this, the accurate statement is LFY; the others are common mix-ups. Not these: A) AP1; C) AG; D) PI. 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.

K-domain of MADS-box proteins is mainly involved in:

The right choice is B: Protein–protein interaction. In ABCE & ABCDE MODEL +Synapdrgon flowering, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) DNA binding; C) RNA binding; D) Chromatin remodeling. 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.

Floral quartet complexes bind DNA through which domain?

Go with B — MADS domain. Under ABCE & ABCDE MODEL +Synapdrgon flowering, 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) Homeodomain; C) bZIP domain; D) HLH domain. 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.

Loss of Class C gene function leads to formation of:

That points to C: Repeated sepals and petals. Compared with the other options, Repeated sepals and petals is the one that correctly describes the ABCE & ABCDE MODEL +Synapdrgon flowering concept. The wrong ones are A) Only sepals; B) Only petals; D) Leaf-like organs. 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.

Loss of Class A function results in absence of:

Answer: A) Sepals and petals. For ABCE & ABCDE MODEL +Synapdrgon flowering, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: B) Petals and stamens; C) Stamens and carpels; D) Carpels only. 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.

Class A and Class C genes shows which interaction?

That points to C: Mutual antagonism. Compared with the other options, Mutual antagonism is the one that correctly describes the ABCE & ABCDE MODEL +Synapdrgon flowering concept. The wrong ones are A) Synergistic; B) Additive; D) Independent. 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.

AGAMOUS (AG) gene mainly specifies:

Answer: C) Stamens and carpels. For ABCE & ABCDE MODEL +Synapdrgon flowering, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Sepals; B) Petals; D) Ovules. 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.