Prepare for NEET Biology Plant Growth and Development with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert insights on plant hormones and growth regulators.
I. Lag phase → Log phase → Stationary phaseII. Geometric and Arithmetic phase of growthIII. Growth shown by all living organism in vivoIV. Match the above characters with sigmoid curve, arithmetic growth, embryo development and choose the correct option accordingly Sigmoid curve Arithmetic Embryo growth development
A) I-Sigmoid curve, II-Arithmetic growth, III-Sigmoid curve, IV-Arithmetic growth
B) I-Arithmetic growth, II-Sigmoid curve, III-Arithmetic growth, IV-Sigmoid curve
C) I-Sigmoid curve, II-Embryo development, III-Sigmoid curve, IV-Arithmetic growth
D) I-Embryo development, II-Arithmetic growth, III-Sigmoid curve, IV-Sigmoid curve
Identify to which plant hormone, the given function belongs I. Initiates flowering in pineapples II. Induces flowering in mango III. Root growth and root hair promotion I II III
Auxin, Gibberellin, Cytokinin
Ethylene, Ethylene, Auxin
Cytokinin, Auxin, Gibberellin
Gibberellin, Cytokinin, Ethylene
Identify the pair of physiological effects of two phytohormones, which are synthesized from different amino acids?I. Formation of perennating buds in Lemna.II. Simultaneous flowering in pineapple.III.Bolting in cabbage.IV.Apical dominance in Polyalthia.
I and II
II and IV
III and IV
I and III
Study the following statement
I. Cytokinins are formed primarily in roots
II. Auxin and cytokinin are antagonistic in apical dominance
III. Kinetin (a modified DNA purine) was discovered from herring sperm
IV. Zeatin is auxin
V. Zeatin was firstly extracted from herring
Choose the incorrect one
I and II
II and III
III and IV
IV and V
Identify two physiological processes induced by two different phytohormones having a common precursor, which is formed due to the catalytic activity of pyruvic dehydrogenase complex. I. more female folwers in cucumber. II. a-amylase production in barley grain. III. Acceleration of fruit ripening in tomato.
IV. Delay in sprouting of potato tubers. the correct combination is
I and II
I and III
II and IV
III and IV
Identify two physiological processes induced by two different phytohormones having a common precursor, which is formed due to the catalytic activity of pyruvic dehydrogenase complex.I. more female folwers in cucumber.II. a-amylase production in barley grain.III. Acceleration of fruit ripening in tomato.IV. Delay in sprouting of potato tubers.The correct combination is
I and II
I and III
II and IV
III and IV
Which of the following statements are correct?
I. A multicellular organism is composed of mainly three types of cells
II. Undifferentiated cells are stem cells and are unspecialised cells, which usually possesses the power of division
III. Differentiated cells are post-mitotic cells and are specialised to perform specific functions
IV. Dedifferentiated cells are differentiated cells which revert to undifferentiated state to take over the function of division
I and II
II and III
I, II and III
II, III and IV
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called
Plasticity
Maturity
Elasticity
Flexibility