Plants having little or no secondary growth are
Conifers
Deciduous angiosperms
Grasses
Cycads
As we learnt in
Secondary Growth in Plants -
By the activity of secondary lateral meristems, increase in the cicumference, growth of the plant organs, due to the formation of secondary tissue called secordary growth. Normally secondary growth take place in roots and stem of dicot and gymnosperms.
- wherein
Due to lack of cambium, secondary growth is absent in monocot - coconut, agave, smilax, dracaena, yucca, palm.
Grasses are monocots and monocots usually do not have secondary growth.
Option 1)
Conifers
This is incorrect.
Option 2)
Deciduous angiosperms
This is incorrect.
Option 3)
Grasses
This is correct.
Option 4)
Cycads
This is incorrect.