- ACycas-Dioecious
- BSalvinia-Heterosporous
- CEquisetum-Homosporous
- ✓Pinus-Dioecious
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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:
$I.$ Meiosis involves pairing of homologous chromosomes and recombinatio between them
$II.$ Two diploid cells are formed at the end of meiosis-$II$
$III.$ Meiosis involves two sequential cycles of nuclear and cell division calle meiosis-$I$ and meiosis-$II$, but only a single cycle of $DNA$ replication
$IV$. Meiosis-$I$ is initiated after the parental chromosome replication which produce identical sister chromatids at the S-phase
The correct option is