- AUnits of $DNA$
- BUnits of $RNA$
- CUnits of proteins
- ✓Units of chromosomes
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$(a)$ The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea
$(b)$ Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin
$(c)$ Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves
$(d)$Rhizophora shows vertically upward growing roots that help to get oxygen for respiration
$(e)$ Subaerially growing stems in grasses and strawberry help in vegetative propagation
Choose the correct answer from the options given below:
$(i)$ Transport and chemically modify the materials contained within it.
$(ii)$ Performs the function of packaging materials.
$(iii)$ Important site of formation of glycoproteins and glycolipids.
Which of the following is the correct answer?