Introduction to plant biology and botany

Explore the microscope basics, from dissecting to light and electron types, learn to focus and calibrate, mount slides with coverslips, and study pollen grains through palynology.

Explore plant cell biology by examining plant cells, their nucleus and organelles, especially chloroplasts, and learn the functions of major organelles and plant chemistry.

Explore the endosymbiosis theory, comparing prokaryotic and eukaryotic cells, and how organelles like mitochondria and chloroplasts formed through symbiosis, with coral-alga examples and DNA evidence.

Explore how plants photosynthesize using sunlight, CO2, and water to make glucose and biomass, and how energy flows from producers to consumers to decomposers.

The plasma membrane is a fluid mosaic phospholipid bilayer with hydrophilic heads facing water and hydrophobic tails, hosting proteins that enable selective transport and cell recognition.

Examine how the plant cell wall surrounds the plasma membrane, forming from primary and secondary layers built from cellulose microfibrils and reinforced by hemicellulose and lignin to provide rigidity.

Explore how the plant cell wall shapes protoplasm and hosts plasmodesmata, the porous zones that connect neighboring cells and enable cytoplasmic streaming between plant cells.

Explore plant cell organelles, their membranes, and functions, from nucleus and mitochondria to chloroplasts and central vacuole. See how ribosomes, endoplasmic reticulum, and Golgi coordinate protein and lipid production.

Explore plant cell structure and organelles, including nucleus, chloroplasts, cytoplasm, primary and secondary cell walls, central vacuole, plasmodesmata, and cytoplasmic streaming.

Explore mitosis as the driver of asexual reproduction, tissue repair, and growth in plants. Examine meiosis for seed production in plants and its contrast with mitosis in the alga.

Explore mitosis within the cell cycle, where a mother cell duplicates chromosomes and divides into two daughter cells through prophase, metaphase, anaphase, and cytokinesis.

Explore meiosis as division that starts with a diploid cell and ends with haploid gametes, with meiosis one separating homologous chromosomes and meiosis two separating sister chromatids, enabling sexual reproduction.

Explore DNA structure, differences between DNA and RNA, and how chromosomes, genes, and alleles in diploid and haploid plant cells govern mitosis and meiosis, alongside extraction and analysis techniques.

Explore how DNA and RNA underpin plant genetics and evolution, including gene expression, heredity, and the role of sexual reproduction in shaping plant diversity.

Explore the structure and function of DNA and RNA, including the double helix versus single strand, sugar differences, nucleotide bases, hydrogen bonding, and base-pairing rules.

Explore how genes, alleles, and chromosomes transmit traits through dominance and recessive patterns, guided by Mendel's laws of segregation and independent assortment from genotype to phenotype.

Explore Mendel's principles with Punnett squares to predict offspring in monohybrid and dihybrid crosses, detailing gamete formation and genotype and phenotype outcomes.

Explore plant anatomy, tissues, and primary and secondary growth, identifying tissue locations and roles through microscopic examination to understand how internal plant organization supports metabolism and form.

Discover stomata on the leaf surface, formed by guard and subsidiary cells, and how the central vacuole inflates to open or close these pores for CO2 uptake and water loss.

Explore leaf anatomy with dermal, ground, and vascular tissues, including epidermis, parenchyma, and xylem and phloem. Compare monocot and dicot leaves, highlighting parallel vascular bundles and palisade presence in dicots.

Explore plant anatomy from dermal tissues to vascular bundles, including epidermis, guard cells, stomata, xylem, and phloem, and compare monocot and dicot growth and leaf structure.

Explore plant physiology through photosynthesis, cellular respiration, and transpiration, detailing chloroplasts' light reactions, carbon cycle, sugar production, and water transport via xylem.

Chloroplasts, the site of photosynthesis in leaves, harvest sunlight in the liquid membrane to produce ATP and electron carriers, fueling the Kelvin cycle in the stroma to form sugar.

Chloroplast pigments, including chlorophyll and carotenoids, serve as light-absorbing antennas; carotenoids are accessory pigments that extend absorption, enabling blue and red light capture for photosynthesis.

Explore how plants convert light energy and CO2 into glucose and oxygen through the light dependent reactions and the Calvin cycle, powered by chlorophyll in the chloroplast.