Advertisements
Advertisements
Question
Answer the following question.
Opuntia has spines but Carissa has thorns. What is the difference?
Advertisements
Solution
- In Opuntia, stem is modified into leaf like photosynthetic organ known as phylloclade.
- Spines growing on phylloclade of Opuntia are leaves, modified to reduce the loss of water through transpiration.
- Thorns in Carissa are modified apical buds. They provide protection against browsing animals.
- Thus, spines in Opuntia and thorns in Carissa have different origin and function.
APPEARS IN
RELATED QUESTIONS
Write a short note on Racemose inflorescence.
Write a short note on fasciculated tuberous root.
Write a short note on Region of cell maturation.
Write a short note on Perianth.
Write a short note on axile placentation.
Students were on an excursion to a botanical garden. They noted the following observation. Will you be able to help them in understanding those condition?
A plant had leaves with long leaf apex, which was curling around support.
Students were on the excursion to a botanical garden. They noted following observation. Will you be able to help them in understanding those condition?
Students observed large leaves of coconut and small leaves of Mimosa. Teacher asked it what way they are similar?
Students were on an excursion to a botanical garden. They noted the following observation. Will you be able to help them in understanding those condition?
Teacher showed them Marigold flower and said it is not one flower. What the teacher meant?
Match the following.
| 'Group A' | 'Group B' |
|
1. |
A. Marginal |
2.  |
B. Basal |
3.  |
C. Axile |
4.  |
D. Free central |
5.  |
E. Parietal |
Flippers of penguin and dolphins is an example of ______.
