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#flower development MCQ

28 public questions tagged with this topic.

CYCLOIDEA mutation in Antirrhinum causes:

B fits best: Radial symmetry. Keep the PSS-Sec-E-Sensory biology basics straight and Radial symmetry stands out as the precise answer. Avoid: A) Bilateral symmetry; C) Male sterility; D) Female sterility. 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.

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.

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.

According to ABCDE model, ovule identity is specified by:

C + D + E (C) is correct here. This is core ABCE & ABCDE MODEL +Synapdrgon flowering: once you know the definition or pathway step, C + D + E is the clear fit. The wrong ones are A) A + B; B) B + C; D) D + E. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.

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 D genes mainly control development of:

B fits best: Ovules. Keep the ABCE & ABCDE MODEL +Synapdrgon flowering basics straight and Ovules stands out as the precise answer. Avoid: A) Carpels; C) Stamens; D) Petals. 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.

Tetramers in Quartet model are formed by association of:

The right choice is B: Two dimers. 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) Four monomers; C) Three dimers; D) Five monomers. 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.

In Quartet model, functional unit regulating organ identity is:

Answer: C) Tetramer. 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) Monomer; B) Dimer; D) Pentamer. 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 E genes act mainly as:

Pick C: Co-factors for ABC genes. Thinking through ABCE & ABCDE MODEL +Synapdrgon flowering step by step rules out the lookalikes and leaves Co-factors for ABC genes. Skip these: A) Structural proteins; B) Hormones; D) Enzymes. 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.

Carpel identity is specified by:

D fits best: C + E. Keep the ABCE & ABCDE MODEL +Synapdrgon flowering basics straight and C + E stands out as the precise answer. Avoid: A) A + E; B) A + B + E; C) B + C + E. 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.

Stamen identity requires expression of:

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