1. Tardigrade
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  4. If the cell ca of 2-celled proembryo divides transversely, the embryo development may conform to

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Q. If the cell ca of 2-celled proembryo divides transversely, the embryo development may conform to

AMUAMU 1995

Solution:

: Solanad type - The apical cell (ca) of the 2- celled proembryo divides transversely and plays main role in the formation of embryo proper and the basal cell (cb) usually forms a suspensor, e.g., solanaceae. Chenopodiad type - The apical cell of the 2-celled proembryo divides transversely and both the basal and apical cells contribute to the development of embryo, e.g., chenopodiaceae. Caryophyllad type - The apical cell of the 2-celled proembryo divides transversely but the basal cell undergoes no further division, and the suspensor, if present, is always derived from the apical cell, e.g., caryophyllaceae. In onagrad and asterad type the apical cell of the 2-celled proembryo divides longitudinally.