NEETBotanyPlant Kingdom
Read the following statements and choose the correct option: 1. The roots are generally tap roots in gymnosperms. 2. Roots in some genera of gymnosperms have fungal association in the form of mycorrhiza, while in some others, small specialised roots called collaroid roots are associated with N2 - fixing cyanobacteria. 3. The leaves in gymnosperms are not well-adapted to withstand extremes of temperature, humidity and
Options
- AOnly 5 is correct
- BOnly 1 is incorrect
- CAll are correct
- DOnly 3 is incorrect
Correct answer
D. Only 3 is incorrect
Step-by-step solution
The roots in gymnosperms are tap roots. Roots in some genera have fungal association in the form of mycorrhiza, while in some others, small specialised roots called collaroid roots are associated with N2 fixing cyanobacteria. The leaves in gymnosperms are well-adapted to withstand extremes of temperature, humidity and wind. In conifers, the needle-like leaves reduce the surface area. Their thick cuticle and sunken stomata also help to reduce water loss.