Seekh Logo

AI-powered learning platform providing comprehensive practice questions, detailed explanations, and interactive study tools across multiple subjects.

Explore Subjects

Sciences
  • Astronomy
  • Biology
  • Chemistry
  • Physics
Humanities
  • Psychology
  • History
  • Philosophy

Learning Tools

  • Study Library
  • Practice Quizzes
  • Flashcards
  • Study Summaries
  • Q&A Bank
  • PDF to Quiz Converter
  • Video Summarizer
  • Smart Flashcards

Support

  • Help Center
  • Contact Us
  • Privacy Policy
  • Terms of Service
  • Pricing

© 2025 Seekh Education. All rights reserved.

Seekh Logo
HomeHomework HelpbiologyC4 Photosynthesis

C4 Photosynthesis

C4 photosynthesis is a metabolic pathway that enables certain plants to efficiently fix carbon dioxide into a four-carbon compound, allowing them to thrive in high-temperature and low-water environments by minimizing photorespiration. This process involves the spatial separation of carbon fixation and the Calvin cycle, typically occurring in different types of cells within the leaf.

intermediate
2 hours
Biology
0 views this week
Study FlashcardsQuick Summary
0

Overview

C4 photosynthesis is a specialized process that allows certain plants to efficiently convert carbon dioxide into energy, particularly in hot and arid environments. This pathway involves unique adaptations, such as the use of PEP carboxylase and bundle sheath cells, which help minimize water loss and...

Quick Links

Study FlashcardsQuick SummaryPractice Questions

Key Terms

Photosynthesis
The process by which green plants use sunlight to synthesize foods from carbon dioxide and water.

Example: Photosynthesis occurs in the chloroplasts of plant cells.

Carbon Fixation
The conversion of inorganic carbon (CO2) into organic compounds by living organisms.

Example: In C4 plants, carbon fixation occurs in the mesophyll cells.

Bundle Sheath Cells
Specialized plant cells that surround vascular bundles and are involved in the C4 photosynthesis pathway.

Example: Bundle sheath cells help in the concentration of CO2 for efficient photosynthesis.

PEP Carboxylase
An enzyme that catalyzes the first step of C4 photosynthesis by fixing carbon dioxide.

Example: PEP carboxylase has a higher affinity for CO2 than Rubisco.

Photorespiration
A process in plants where oxygen is consumed and carbon dioxide is released, often reducing photosynthetic efficiency.

Example: C4 plants minimize photorespiration compared to C3 plants.

Stomata
Small openings on the surface of leaves that allow gas exchange.

Example: Stomata open to take in CO2 during the day.

Related Topics

C3 Photosynthesis
The most common form of photosynthesis, involving a three-carbon compound for carbon fixation.
intermediate
Plant Adaptations
How plants adapt to their environments, including water conservation and temperature regulation.
intermediate
Climate Change and Agriculture
The impact of climate change on agricultural practices and crop yields.
advanced
Photosynthetic Pathways
Different pathways plants use for photosynthesis, including C3, C4, and CAM.
advanced

Key Concepts

Carbon fixationBundle sheath cellsPEP carboxylasePhotorespiration reduction