MCQ
$CO _2$ acceptor in $C _3$ plants is:
- A3-phosphoglyceric acid
- BXylulose-5-phosphate
- CRibulose-1, 5-diphosphate
- DPhosphoenol pyruvic acid
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$I -$ Tapetum nourishes the developing pollen grains.
$II-$ Hilum represents the junction between ovule and funicle
$III-$ In aquatic plants such as water hyacinth and water lily, pollination is by water:
$IV-$ The primary endosperm nucleus is tripoid.