Q1. Make neat and labelled diagrams of the following:
- i)) Types of ovules (150 words)
- ii)) Apomixis types (150 words)
- iii)) Cross-section of fruit of Pyrus malus (150 words)
- iv)) Storied and non-storied cambium (150 words)
Key Points:
- Ovules are classified by the orientation of funiculus, chalaza, and micropyle; anatropous is most common (inverted).
- Apomixis is asexual reproduction without fertilization, producing genetically identical progeny.
- Recurrent apomixis (diplospory, apospory) forms diploid embryo sacs; non-recurrent (apogamy, adventitive embryony) forms haploid or somatic embryos.
- Apple (Pyrus malus) is a pome fruit where the fleshy part develops from the receptacle, not the ovary wall.
Answer: As an expert IGNOU tutor, I will provide comprehensive descriptions for the requested biological structures and processes. Since I cannot generate visual diagrams directly, I will articulate detailed descriptions of what a neat and labelled diagram for each sub-question would depict, drawing upon standard developmental biology principles taught in courses like LSE-06. Each description will adhere to the specified word limits and incorporate academic terminology for clarity and accuracy.