Download App

Morphology of Flowering Plants — Biology STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceBiologyMorphology of Flowering Plants4 Marks
Question
Opuntia has spines but Carissa has thorns. What is the difference?
✓

Answer

  1. In Opuntia, stem is modified into leaf like photosynthetic organ known as phylloclade.
  2. Spines growing on phylloclade of Opuntia are leaves, modified to reduce the loss of water through transpiration.
  3. Thoms in Carissa are modified apical buds. They provide protection against browsing animals.
  4. Thus, spines in Opuntia and thorns in Carissa have different origin and function.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail" from Morphology of Flowering Plants→Morphology of Flowering Plants — all question types→Biology STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Select odd one out on the basis of digestive functions of tongue.
→
How do cell junctions help in functioning of epithelial tissue?
→
What is the difference between Cortical nephrons and Juxtamedullary nephrons.
→
Draw neat and labelled diagram of a typical angiospermic plant. Classify its vegetative and reproductive structures.
→
Elaborate on lumbar vertebrae with help of a neat and labelled diagram.
→
What is cell junction? Describe different types of cell junctions.
→
Explain the secondary structure of protein with examples.
→
1. What is necrosis?
2. What is apoptosis? Mention its significance.
→
What is metabolism? How metabolic pool is formed in the cell.
→
What were the findings of Wilkins and coworkers?
→