UPCAT Biology — Plants (Botany)Slides
Revision slides for UPCAT Biology — Plants (Botany). Structured for quick scanning, with one idea per slide and the key formulas called out clearly. Good for the final week before the UPCAT 2026 when you want to refresh the whole chapter in under an hour.
Exam context
For the University of the Philippines College Admission Test, University of the Philippines tests Biology under a "Core" label, with Plants (Botany) in the 3rd slot across 7 chapters. UPCAT candidates must clear the UPG ≤ 2.2 typical cut on the 2026 paper, which draws about 20 Biology questions. Date to watch: Mid-2026 (announced by UP Admissions).
Plants (Botany) - Slides
Plants are multicellular, autotrophic organisms that form the foundation of most ecosystems on Earth. They produce their own food through photosynthesis using chlorophyll, the green pigment that captures light energy. This chapter explores the fascinating world of plants, from simple algae to complex flowering plants, examining their structures, classification, and vital processes that sustain life on our planet.
Slides
Introduction to Plants
Plants are unique organisms that can make their own food using sunlight, water, and carbon dioxide. This ability makes them autotrophs, meaning 'self-feeders.' The green color in most plants comes from chlorophyll, which captures light energy for photosynthesis.
Notes
Plants are essential for life on Earth as they convert inorganic substances into organic compounds through photosynthesis.
Topic
Plant Introduction
Slide Id
S1
Visual Type
mermaid
Image Prompt
Slide Number
1
Mermaid Diagram
Code
mindmap root((Plants)) Characteristics Multicellular Autotrophic Contain chlorophyll Photosynthesis Functions Food production Oxygen release Ecosystem foundation Examples Trees Grasses Seaweeds Mosses
Type
mermaid_mindmap
Description
Mind map showing the key characteristics, functions, and examples of plants
Plant Classification Overview
Plant classification helps us understand the evolutionary relationships and characteristics of different plant groups. The classification system moves from simple to complex forms.
Notes
This classification system reflects the evolutionary progression from simple algae to complex flowering plants.
Topic
Plant Classification
Slide Id
S2
Visual Type
mermaid
Image Prompt
Slide Number
2
Mermaid Diagram
Code
flowchart TD A[Plants] --> B{Body Differentiation?} B -->|No| C[Ancestral Plants Thallophyta] B -->|Yes| D{Vascular Tissues?} D -->|No| E[Non-vascular Plants Bryophytes] D -->|Yes| F{Produce Seeds?} F -->|No| G[Spore-producing Pteridophytes] F -->|Yes| H{Flowers?} H -->|No| I[Gymnosperms] H -->|Yes| J[Angiosperms]
Type
mermaid_flowchart
Description
Flowchart showing the classification hierarchy of plants from simple to complex forms
Algae - The Ancestral Plants
Algae represent the most primitive plant forms. They have a simple body structure called a thallus and are found mainly in aquatic environments. Despite their simplicity, they play crucial roles in aquatic ecosystems.
Notes
Algae are considered transitional organisms between simple protists and more complex plants.
Topic
Algae
Slide Id
S3
Visual Type
mermaid
Image Prompt
Slide Number
3
Mermaid Diagram
Code
flowchart TD A[fa:fa-leaf Algae Body Parts] --> B[Thallus Main Body] A --> C[Blade Leaf-like Structure] A --> D[Stipe Stem-like Structure] A --> E[Holdfast Root-like Anchor] A --> F[Gas Bladder Float Structure]
Type
mermaid_flowchart
Description
Diagram showing the different parts of an algae structure
Types of Algae
The three main types of algae are distinguished by their pigments, habitat, and cellular characteristics. Each group has adapted to different environmental conditions.
Notes
The different pigments allow algae to absorb light at various depths in water environments.
Topic
Algae Types
Slide Id
S4
Visual Type
mermaid
Image Prompt
Slide Number
4
Mermaid Diagram
Code
pie title Algae Distribution by Habitat "Marine Red Algae" : 40 "Marine Brown Algae" : 35 "Freshwater Green Algae" : 25
Type
mermaid_pie
Description
Pie chart showing the distribution of different algae types by their preferred habitats
Bryophytes - Non-vascular Plants
Bryophytes represent the first major group of land plants. They have developed some terrestrial adaptations but still require water for reproduction, hence their 'amphibian' status.
Notes
Bryophytes are evolutionary intermediates between aquatic algae and fully terrestrial vascular plants.
Topic
Bryophytes
Slide Id
S5
Visual Type
mermaid
Image Prompt
Slide Number
5
Mermaid Diagram
Code
flowchart TD A[fa:fa-leaf Bryophyte Characteristics] --> B[Cuticle Waxy Protection] A --> C[Stomata Gas Exchange] A --> D[Gametangia Sex Organs] A --> E[Rhizoids Anchoring Structures] A --> F[No True Roots Stems Leaves]
Type
mermaid_flowchart
Description
Flowchart showing the key characteristics that distinguish bryophytes from algae
Bryophyte Reproduction
Bryophytes have a unique reproductive system with distinct male and female organs. The life cycle alternates between haploid gametophyte and diploid sporophyte generations.
Notes
The dependence on water for reproduction limits bryophytes to moist environments.
Topic
Bryophyte Reproduction
Slide Id
S6
Visual Type
mermaid
Image Prompt
Slide Number
6
Mermaid Diagram
Code
sequenceDiagram participant A as Antheridium participant W as Water participant R as Archegonium participant Z as Zygote A->>W: Releases sperm W->>R: Transports sperm R->>Z: Fertilization occurs Z->>A: Develops into sporophyte
Type
mermaid_sequence
Description
Sequence diagram showing the reproductive process in bryophytes
Types of Bryophytes
The three main groups of bryophytes differ in their body structure, presence of stomata, and other characteristics. Each group has adapted to specific environmental conditions.
Notes
Stomata presence indicates adaptation to terrestrial life and gas exchange control.
Topic
Bryophyte Types
Slide Id
S7
Visual Type
mermaid
Image Prompt
Slide Number
7
Mermaid Diagram
Code
flowchart TD A[Bryophytes] --> B[Mosses] A --> C[Liverworts] A --> D[Hornworts] B --> E[Erect structure] B --> F[Have stomata] C --> G[Flat or leafy] C --> H[No stomata] D --> I[Flat body] D --> J[Have stomata]
Type
mermaid_flowchart
Description
Flowchart comparing the three main types of bryophytes and their distinguishing features
Vascular Plants - Tracheophyta
The evolution of vascular tissues marked a major advancement in plant evolution. These specialized transport systems allow plants to grow larger and colonize diverse terrestrial habitats.
Notes
Vascular tissues enable plants to achieve greater heights and survive in drier environments.
Topic
Vascular Plants
Slide Id
S8
Visual Type
mermaid
Image Prompt
Slide Number
8
Mermaid Diagram
Code
flowchart TD A[fa:fa-leaf Vascular System] --> B[Xylem] A --> C[Phloem] B --> D[Water Transport] B --> E[Mineral Transport] B --> F[Structural Support] C --> G[Sugar Transport] C --> H[Organic Compound Transport]
Type
mermaid_flowchart
Description
Diagram showing the components and functions of plant vascular systems
Pteridophytes - Spore-producing Vascular Plants
Pteridophytes represent an important evolutionary step, combining vascular tissues with spore reproduction. They dominated ancient forests and many species still thrive today.
Notes
Pteridophytes were the first vascular plants and dominated Paleozoic forests.
Topic
Pteridophytes
Slide Id
S9
Visual Type
mermaid
Image Prompt
Slide Number
9
Mermaid Diagram
Code
mindmap root((Pteridophytes)) Psilophyta Most primitive Leaves often absent Psilotum Lycophyta Club mosses Microphyllous leaves Lycopodium Sphenophyta Horsetails Scaly leaves in whorls Equisetum Pterophyta True ferns Macrophyllous fronds Pteris
Type
mermaid_mindmap
Description
Mind map showing the four divisions of pteridophytes and their characteristics
Seed Plants - Spermatophyta
Seed plants represent the pinnacle of plant evolution. The development of seeds allowed plants to reproduce without dependence on water and colonize diverse terrestrial environments.
Notes
Seeds represent one of the most successful evolutionary innovations in plant kingdom.
Topic
Seed Plants
Slide Id
S10
Visual Type
mermaid
Image Prompt
Slide Number
10
Mermaid Diagram
Code
flowchart TD A[fa:fa-leaf Seed Plant Advantages] --> B[Protected Embryo] A --> C[Stored Food Supply] A --> D[Water Independent] A --> E[Enhanced Dispersal] B --> F[Seed Coat Protection] C --> G[Endosperm Nutrition] D --> H[Terrestrial Success] E --> I[Geographic Expansion]
Type
mermaid_flowchart
Description
Flowchart showing the evolutionary advantages provided by seed development
Gymnosperms - Non-flowering Seed Plants
Gymnosperms were the first seed plants to evolve. Their naked seeds and wind pollination strategies made them highly successful in diverse climates, especially cooler regions.
Notes
Gymnosperm literally means 'naked seed' referring to seeds not enclosed in fruits.
Topic
Gymnosperms
Slide Id
S11
Visual Type
mermaid
Image Prompt
Slide Number
11
Mermaid Diagram
Code
flowchart TD A[fa:fa-leaf Gymnosperm Features] --> B[Naked Seeds] A --> C[Xerophytic Adaptations] A --> D[Wind Pollination] B --> E[No Fruit Formation] C --> F[Waxy Cuticles] C --> G[Needle Leaves] D --> H[Pollen Cones] D --> I[Large Pollen Production]
Type
mermaid_flowchart
Description
Diagram showing the key features and adaptations of gymnosperms
Angiosperms - Flowering Plants
Angiosperms are the most successful plant group on Earth. Their flowers, fruits, and double fertilization system have enabled them to dominate most terrestrial ecosystems.
Notes
Angiosperms include about 90% of all plant species currently living on Earth.
Topic
Angiosperms
Slide Id
S12
Visual Type
mermaid
Image Prompt
Slide Number
12
Mermaid Diagram
Code
flowchart TD A[Angiosperms] --> B{Number of Cotyledons} B -->|One| C[Monocots] B -->|Two| D[Dicots] C --> E[Parallel Leaf Veins] C --> F[Fibrous Root System] C --> G[Flower Parts in 3s] D --> H[Netted Leaf Veins] D --> I[Taproot System] D --> J[Flower Parts in 4s or 5s]
Type
mermaid_flowchart
Description
Flowchart showing the classification of angiosperms into monocots and dicots
Plant Tissue Systems
Plant tissues are organized into three main systems that work together to support plant structure and function. Each system has specialized roles in protection, support, and transport.
Notes
The organization of tissues into systems allows for specialized functions and efficient plant operation.
Topic
Plant Tissues
Slide Id
S13
Visual Type
mermaid
Image Prompt
Slide Number
13
Mermaid Diagram
Code
flowchart TD A[Plant Tissue Systems] --> B[Dermal Tissue] A --> C[Ground Tissue] A --> D[Vascular Tissue] B --> E[Epidermis] B --> F[Periderm] C --> G[Parenchyma Living Cells] C --> H[Collenchyma Support] C --> I[Sclerenchyma Strength] D --> J[Xylem Water Transport] D --> K[Phloem Food Transport]
Type
mermaid_flowchart
Description
Diagram showing the three main plant tissue systems and their components
Photosynthesis - The Life-Sustaining Process
Photosynthesis is the most important biological process on Earth. It captures solar energy and converts it into chemical energy while producing oxygen as a byproduct.
Notes
Photosynthesis essentially captures and stores solar energy in the form of glucose molecules.
Topic
Photosynthesis
Slide Id
S14
Visual Type
mermaid
Image Prompt
Slide Number
14
Mermaid Diagram
Code
sequenceDiagram participant S as Sunlight participant C as Chloroplast participant T as Thylakoid participant St as Stroma S->>C: Light energy absorbed C->>T: Light reactions begin T->>T: ATP and NADPH produced T->>St: Energy molecules transferred St->>St: Calvin cycle produces glucose
Type
mermaid_sequence
Description
Sequence diagram showing the two stages of photosynthesis
Plant Parts and Their Functions
Each plant part has evolved specific structures and functions that contribute to the plant's survival and reproduction. Understanding these parts helps us appreciate plant complexity.
Notes
The integration of all plant parts working together enables successful plant life and reproduction.
Topic
Plant Parts
Slide Id
S15
Visual Type
mermaid
Image Prompt
Slide Number
15
Mermaid Diagram
Code
mindmap root((Plant Parts)) Roots Absorption Anchorage Storage Stem Support Transport Storage Leaves Photosynthesis Gas Exchange Transpiration Flowers Reproduction Pollinator Attraction Fruits Seed Protection Dispersal Aid
Type
mermaid_mindmap
Description
Mind map showing plant parts and their primary functions
Chapter Summary - Plants (Botany)
The study of botany reveals the incredible diversity and importance of plants. From simple algae to complex angiosperms, plants have evolved remarkable strategies for survival and reproduction while providing the foundation for all terrestrial ecosystems.
Notes
Understanding plant evolution and diversity is crucial for appreciating their role in ecosystems and human society.
Topic
Chapter Summary
Slide Id
S16
Visual Type
mermaid
Image Prompt
Slide Number
16
Mermaid Diagram
Code
timeline title Plant Evolution Timeline Algae : Simple thallus body Bryophytes : Land adaptation begins Pteridophytes : Vascular tissues develop Gymnosperms : Seed evolution Angiosperms : Flower and fruit evolution
Type
mermaid_timeline
Description
Timeline showing the major evolutionary milestones in plant development
References
- BRAINBOX UPCAT AND OTHER COLLEGE ENTRANCE - Biology.pdf
- CET 2026 COMPREHENSIVE LECTURE NOTES - Science.pdf
- THE UPCAT CHAMPION CET - Science.pdf
- Philippine Department of Education Biology Curriculum
- UPCAT Biology Examination Guidelines
In summary
Plants represent one of the most successful and diverse groups of organisms on Earth. From the simple algae in our coastal waters to the complex flowering plants that dominate our landscapes, each group has evolved unique adaptations for survival. The development of photosynthesis, vascular systems, and seeds represents major evolutionary milestones that enabled plants to colonize diverse environments. Understanding plant biology is essential for appreciating their ecological importance, economic value, and the critical role they play in sustaining life on our planet. As we face environmental challenges, knowledge of plant biology becomes increasingly important for conservation, agriculture, and sustainable development in the Philippines and worldwide.
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