MCQ
What is true for cleavage?
- ASize of embryo increases.
- BSize of cells decreases.
- ✓Size of cells increases.
- DSize of embryo decreases.
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$I.$ Sweet potato
$II.$ Potato
$III.$ Filippers of penguins and dolphins
$IV.$ Hearts of different vertebrate
$V.$ Forelimbs of whales, bat and cheetah
The correct option is
$I -$ 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.