Advertisements
Advertisements
Question
Students were on the excursion to a botanical garden. They noted following observation. Will you be able to help them in understanding those condition?
Many plants in the marshy region had upwardly growing roots. They could be better seen during low tide.
Solution
- Plants growing in marshy region (halophytes) produce upwardly growing roots called as pneumatophores or respiratory roots.
- The main root system of these plants does not get sufficient air for respiration as soil is water logged.
- Due to this, mineral absorption of plant also gets affected.
- To overcome this problem underground roots, develop special roots which are negatively geotropic; growing vertically upward.
- These roots are conical projections present around main trunk of plant.
- Respiratory roots show presence of lenticels which helps in gaseous exchange.
APPEARS IN
RELATED QUESTIONS
Answer the following question.
Two of the vegetables we consume are nothing but leaf bases. Which are they?
Answer the following question.
Opuntia has spines but Carissa has thorns. What is the difference?
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 vexillary aestivation.
Students were on an excursion to a botanical garden. They noted the following observation. Will you be able to help them in understanding those conditions?
A wiry outgrowth was seen on a plant arising from in between the leaf and stem.
Students were on an excursion to a botanical garden. They noted the following observation. Will you be able to help them in understanding those conditions?
There was a green plant with flat stem, but no leaves. The entire plant was covered by soft spines.
Match the following.
| 'Group A' | 'Group B' |
|
1. |
A. Marginal |
2.  |
B. Basal |
3.  |
C. Axile |
4.  |
D. Free central |
5.  |
E. Parietal |
Observe the following figure and label the different parts.
