BOT2601 Assignment 2 (100% COMPLETE ANSWERS) Semester 1 2025

BOT2601
ASSIGNMENT 2 SEMESTER 1 2025

UNIQUE NO.
DUE DATE: 2025

, BOT2601

Assignment 2 Semester 1 2025



Unique Number:

Due Date: 2025

Plant Anatomy, Structure and Function

Question 1

Anatomical Differences Between Tropical and Temperate Grass Species

Grass species in tropical and temperate regions differ significantly in their anatomical
structures, mainly due to their adaptation to varying climatic conditions. These
differences are primarily observed between C4 grasses, which dominate tropical
regions, and C3 grasses, which thrive in temperate zones.

1. Photosynthetic Pathway and Leaf Anatomy

 C3 Grasses (Temperate Regions)
o Possess a mesophyll-rich leaf structure without specialized bundle
sheath cells.
o Veins are more widely spaced, and the mesophyll cells are loosely
packed.
o Photosynthesis primarily occurs in mesophyll cells, where CO₂ is directly
fixed into a 3-carbon compound (3-phosphoglycerate).
 C4 Grasses (Tropical Regions)
o Have a characteristic Kranz anatomy, where bundle sheath cells
surround the vascular bundles.
o Veins are closely spaced, and the mesophyll cells are arranged
concentrically around them.