MCQ
Arboretum is:
- AA forest patch.
- BA piece of social forestry.
- ✓Botanical garden with trees.
- DBotanical garden with cacti and herbs.
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$(A)$ Inliverworts,mossesandferns gametophytes are freeliving.
$(B)$ Gymnosperms and some ferns are heterosporous.
$(C)$ Sexual reproduction in Fucus, Volvox andAlbugo is oogamous.
$(D)$ The sporophyte in liverworts is more elaborate than that in mosses.
$(E)$ Both, Pinus and Marchantia are dioecious. How many of the above statements are correct?
$a -$ cell cycle can vary from organisation to organism and also from cell type to cell type.
$b -$ $DNA$ synthesis occurs only in pachytene.
$c-G_1$ phase corresponds to the interval between mitosis and initiation of $DNA $ reproduction.