Plant Physiology MCQs-11

Plant Physiology MCQs-11
Multiple Choice Questions (MCQs)
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1. Maize (Zea mays) is a monoecious plant, producing separate male (tassel) and female (ear) inflorescences on the same individual. The primary agent facilitating pollen transfer from the tassel to the silks (stigmas) is ________

 Wind (anemophily)

 Self-pollination within the same flower

 Water (hydrophily)

 Insects (entomophily)

2. The critical moisture content for safe storage of orthodox seeds is generally in the range of _______

 20-24%

 10-13%

 5-7%

 15-18%

3. The primary seed storage proteins accumulated in the cotyledons of legumes for nitrogen and carbon reserves during germination are _______

 Globulins

 Prolamins

 Histones

 Albumins

4. In plant science, the topographic Tetrazolium (TZ) test is a rapid biochemical assay primarily used to determine ____________-

 The vigor index, including germination speed and seedling growth potential

 The viability of the embryo based on respiratory enzyme activity

 The moisture content percentage on a wet or dry weight basis

 The physical purity and presence of inert matter in a seed lot

5. The hydrolytic enzymes synthesized in the aleurone layer are secreted into the ________

 Pericarp

 Endosperm

 Embryo axis

 Scutellum

6. In plants, guttation typically occurs when _________

 Transpiration is high and soil moisture is low

 Stomata are fully open during the day

 Soil moisture is high and atmospheric humidity is high

 Temperatures are extremely high

7. Dormancy caused by hard seed coat is known as ______

 Morphological dormancy

 Physiological dormancy

 Physical dormancy

 Secondary dormancy

8. During germination of cereal grains, the embryo produces a hormone ______________ that diffuses to the aleurone layer. This hormone stimulates the transcription and de novo synthesis of α-amylase, an enzyme responsible for hydrolyzing starch in the endosperm

 Cytokinin

 Abscisic acid

 Auxin

 Gibberellin

9. The first visible sign of seed germination is _________

 Plumule emergence

 Radicle protrusion through seed coat

 Cotyledon expansion

 Leaf formation

10. The primary product formed after β-oxidation of fatty acids in germinating seeds is _________

 Oxaloacetate

 Acetyl-CoA

 Pyruvate

 Glucose

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Plant Physiology MCQs-11

Plant Physiology MCQs

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Multiple Choice Questions (MCQs) for Professional Test Preparation

Use of Multiple-choice questions (MCQs) is among the proven strategies to test your knowledge and improve your skills for relevant exams. These Expert-Approved MCQs cover various aspects of the fundamentals of agriculture, crop plants, production technologies, dietary and nutritional importance and industrial processes. Moreover, key questions about soil, irrigation, pests, diseases and other aspects of crop management are also included. Return to [MCQ Homepage]

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Plant Physiology MCQs

Plant physiology is the branch of botany focused on how plants function at cellular, biochemical, and organismal levels. It investigates crucial processes—photosynthesis, nutrient uptake, respiration, hormone action, and water transport—essential for plant growth, development, and environmental adaptation.

Key areas within the study of plant physiology include

1. Photosynthesis
2. Respiration
3. Transpiration
4. Water and mineral uptake
5. Transport (xylem and phloem)
6. Growth and development
7. Hormonal regulation
8. Nutrient assimilation
9. Stress physiology
10. Reproductive physiology

Photosynthesis: Plants capture light energy to convert carbon dioxide and water into glucose for energy,.
Water and Nutrient Transport: The xylem moves water upward from roots, while phloem transports nutrients throughout the plant.
Growth and Development: Study of how phytohormones regulate growth, seed germination, and response to environmental stressors like heat or drought.
Environmental Physiology: Understanding how plants adapt to their environment, such as managing water loss through stomatal closing

Plant Physiology MCQs, Photosynthesis MCQs, Nutrient Uptake MCQs, Transpiration and Respiration MCQs, Plant Growth Regulators