10 Questions
What is the floral axis termed as when a shoot tip transforms into a flower?
Inflorescence
In which type of inflorescence do the flowers continue to grow laterally in an acropetal succession?
Racemose
What are the accessory organs in a typical flower?
Calyx and corolla
What is the reproductive unit in the angiosperms?
Flower
When is a flower termed as bisexual?
When it has both androecium and gynoecium
What was the initial focus of naturalists' description of biology?
Observable living phenomena
Why did biology remain as a natural history for a long time?
Lack of interest in experimental biology
What drew more attention from scientists in reductionist biology?
Living processes
What became meaningful and helpful in framing research questions in physiology or evolutionary biology?
Detailed description of life forms
What is the main focus of the following chapters in the unit on structural organisation in plants and animals?
Morphological and anatomical features of plants and animals
Study Notes
Flower Morphology
- When a shoot tip transforms into a flower, the floral axis is termed as a receptacle.
Inflorescence
- In a scorpioid cyme, flowers continue to grow laterally in an acropetal succession.
Flower Structure
- Accessory organs in a typical flower are sepals, petals, stamens, and carpels.
Reproductive Unit
- The reproductive unit in angiosperms is the flower.
Bisexual Flowers
- A flower is termed as bisexual when it has both androecium (male reproductive organs) and gynoecium (female reproductive organs).
History of Biology
- Initially, naturalists focused on describing biology with an emphasis on classification and naming of organisms.
- Biology remained a natural history for a long time due to the focus on descriptive classification.
- Molecular biology drew more attention from scientists, shifting focus from descriptive biology to reductionist biology.
- Evolutionary principles became meaningful and helpful in framing research questions in physiology and evolutionary biology.
Structural Organisation in Plants and Animals
- The main focus of the following chapters is on the structure, function, and diversity of plant and animal bodies.
Test your knowledge on the biological process of inflorescence, where the shoot apical meristem changes to floral meristem, producing different kinds of floral appendages. Explore the major types of inflorescences and their characteristics.
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